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1 Kaspersky Security 8.0 for Linux Mail Server Administrator's Guide APPLICATION VERSION: 8.0 MAINTENANCE PACK 1

2 Dear User, Thank you for choosing our product. We hope that you will find this documentation useful and that it will provide answers to most questions that may arise. Attention! This document is the property of Kaspersky Lab ZAO (herein also referred to as Kaspersky Lab): all rights to this document are reserved by the copyright laws of the Russian Federation, and by international treaties. Illegal reproduction or distribution of this document or parts hereof will result in civil, administrative, or criminal liability under applicable law. Any type of reproduction or distribution of any materials, including translations, is allowed only with the written permission of Kaspersky Lab. This document and related graphic images can be used exclusively for informational, non-commercial, or personal use. This document may be amended without prior notice. You can find the latest version of this document on the Kaspersky Lab website, at Kaspersky Lab assumes no liability for the content, quality, relevance, or accuracy of any materials used herein the rights to which are owned by third parties, or for any potential damages associated with the use of such documents. Document revision date: 12/22/ Kaspersky Lab ZAO. All Rights Reserved

3 TABLE OF CONTENTS ABOUT THIS GUIDE.. 8 In this document.. 8 Document conventions SOURCES OF INFORMATION ABOUT THE APPLICATION Sources of information for independent research Discussing Kaspersky Lab applications on the forum Contacting the Sales Department Contacting the Localization and Technical Documentation Unit KASPERSKY SECURITY 8.0 FOR LINUX MAIL SERVER Hardware and software requirements Distribution kit APPLICATION ARCHITECTURE Main components Operation algorithm INSTALLING AND REMOVING THE APPLICATION Preparing to install Upgrading from a previous version of the application Installing Kaspersky Security on top of the previous version Updating Kaspersky Security settings Installing the Kaspersky Security web interface on top of the previous version Updating Kaspersky Security web interface settings Installing the application Step 1. Installing the Kaspersky Security package Step 2. Installing the Kaspersky Security web interface package Preparing Kaspersky Security for operation Step 1. Selecting the language for viewing the License Agreement and the Kaspersky Security Network Statement Step 2. Reviewing the License Agreement Step 3. Participating in Kaspersky Security Network Step 4. Selecting the backup directory Step 5. Backup connection settings Step 6. Selecting the socket Step 7. Managing Kaspersky Security via the web interface Step 8. Selecting the TCP port for interaction with the Apache module Step 9. Assigning a password to access the web interface Step 10. Selecting the type of integration with the mail server Step 11. Configuring the proxy server settings Step 12. Adding a key Step 13. Updating databases Starting automatic initial configuration of Kaspersky Security Preparing Kaspersky Security web interface for operation Step 1. Selecting the License Agreement language Step 2. Reviewing the License Agreement Step 3. Selecting an Apache web server

4 A D M I N I S T R A T O R ' S G U I D E Step 4. Selecting an Apache server virtual host Step 5. Selecting a socket to interact with Kaspersky Security Step 6. How to crack locked pdf files. Selecting a certificate to access the web interface Starting automatic initial configuration of the web interface of Kaspersky Security Configuring administration of the application through Kaspersky Security Center Installing Network Agent Configuring Network Agent settings Checking the connection to Kaspersky Security Center Removing Kaspersky Security Actions after removing Kaspersky Security MANUAL INTEGRATION OF KASPERSKY SECURITY WITH MAIL SERVERS AND AMAVIS INTERFACE About manual integration Manual Integration with Sendmail server Integration using the.mc file Integration using the.cf file Manual Integration with Exim mail server After-queue integration by rerouting Before-queue integration using dynamic linking Manual Integration with qmail server Manual integration with a Postfix mail server After-queue integration Before-queue integration Integration using the Milter protocol Manual integration with the Amavis interface Integration by means of user scripts Types of user scripts General requirements for user scripts Search script Searchusers script Getuseraccount script Login script APPLICATION LICENSING About the End User License Agreement About the license About the key file About the key Viewing information about the license and added keys About data provision Adding a key Removing a key STARTING AND STOPPING THE APPLICATION SERVER PROTECTION STATUS BASIC PRINCIPLES About scan and content filtering statuses About message processing rules Message processing algorithm About black and white lists of addresses

5 T A B L E O F C O N T E N T S Creating message processing rules Viewing the list of message processing rules About actions on objects About Kaspersky Security tasks Viewing the list of application tasks About information X-headers ANTI-SPAM PROTECTION About Anti-Spam protection About external Anti-Spam message scanning services Enabling and disabling the Anti-Spam engine Enabling and disabling Anti-Spam scanning of messages for a rule Configuring general Anti-Spam scan settings Configuring Anti-Spam scan settings for a rule Using reputation filtering Limiting the size of messages to be scanned for spam ANTI-VIRUS PROTECTION About Anti-Virus protection About ZETA Shield technology Enabling and disabling the Anti-Virus engine Enabling and disabling the Zeta Shield technology Enabling and disabling Anti-Virus scanning for a rule Configuring general Anti-Virus scan settings Configuring the processing of a message that cannot be disinfected Configuring Anti-Virus scan settings for a rule Excluding messages from Anti-Virus scanning by attachment format Excluding messages from Anti-Virus scanning by attachment name Limiting the size of objects to be scanned for viruses ANTI-PHISHING PROTECTION About Anti-Phishing protection Enabling and disabling the Anti-Phishing engine Enabling and disabling Anti-Phishing scanning of messages for a rule Configuring general Anti-Phishing scan settings Configuring Anti-Phishing scan message processing settings CONTENT FILTERING About content filtering Enabling and disabling content filtering of messages Enabling and disabling content filtering of messages for a rule Configuring content filtering by message size Configuring content filtering by attachment name Configuring content filtering by attachment format UPDATING KASPERSKY SECURITY DATABASES About database updates Checking database state About update sources Select update source Configuring the proxy server settings Configuring the update task schedule

6 A D M I N I S T R A T O R ' S G U I D E Update task schedule settings Manual database update ADVANCED CONFIGURATION OF KASPERSKY SECURITY Configuring global black and white lists of addresses Setting the number of scanning streams Importing / exporting settings INTEGRATING THE APPLICATION WITH AN EXTERNAL USER SERVICE USING THE LDAP PROTOCOL About integration with an external user service via LDAP Configuring the application connection to an external user service using LDAP Checking the server connection using LDAP Adding senders / recipients from an external user service to rules Adding personal black and white lists of addresses Setting up integration with the custom directory service Managing untrusted certificates USING THE APPLICATION VIA THE SNMP PROTOCOL About receiving runtime information via the SNMP protocol Configuring interaction with the application via the SNMP protocol Getting the ID of the SNMP process Enabling information exchange via the SNMP protocol Calling MIB objects Enabling / disabling event traps Viewing the MIB structure using the snmpwalk command MANAGING COMPANY EMPLOYEE ACCOUNTS About a company employee account Activating and deactivating a company employee account Configuring settings of a company employee account Configuring the transmission of infected messages placed in Backup to users BACKUP About Backup Viewing statistics of message copies in Backup Filtering the details of message copies in Backup Deleting message copies from Backup Saving messages from Backup to file Delivering messages from Backup to recipients Configuring the Backup settings NOTIFICATIONS About notifications Enabling delivery of notifications about objects Specifying additional addresses for delivery of notifications about objects Configuring delivery of event notifications to the administrator Editing templates of event notifications Using macros in templates of event notifications RUNTIME REPORTS AND STATISTICS Viewing runtime statistics Creating reports Creating on-demand reports

7 T A B L E O F C O N T E N T S Configuring scheduled reports EVENT LOG Event log Changing the system log category for storing events Configuring event logging in the event log TRACE LOG About the trace log Enabling the trace log Configuring the level of detail of the trace log Configuring the location of the trace log Configuring the rotation of trace files TESTING THE APPLICATION OPERATION About the EICAR test file About the types of the EICAR test file Testing application performance using the EICAR test file ADMINISTRATION OF THE APPLICATION THROUGH KASPERSKY SECURITY CENTER Starting and stopping Kaspersky Security on a client computer Managing tasks About tasks for Kaspersky Security 8.0 for Linux Mail Server Creating a local task Creating a group task Creating a task for a set of computers Starting a task Viewing general information on the operation of Kaspersky Security in a computer cluster CONTACTING THE TECHNICAL SUPPORT SERVICE How to obtain technical support Technical support by phone Obtaining technical support via Personal Cabinet Using a trace file Extended diagnostics of application operation APPENDICES Application file locations on a computer running Linux Application file locations on a computer running FreeBSD KASPERSKY LAB ZAO INFORMATION ABOUT THIRD-PARTY CODE TRADEMARK NOTICES INDEX

8 ABOUT THIS GUIDE This document is the Administrator's Guide to installing, configuring, and using the Kaspersky Security 8.0 for Linux Mail Server (hereinafter also 'Kaspersky Security'). This document is intended for application administrators. The Guide is intended for technical specialists who carry out the installation and administration of Kaspersky Security and provide support for organizations that use Kaspersky Security. This Guide is intended to: Explain how to install and use Kaspersky Security. Provide readily available information on issues related to the operation of Kaspersky Security. Describe additional sources of information about the application and ways of receiving technical support. IN THIS SECTION In this document.. 8 Document conventions IN THIS DOCUMENT This document includes the following sections: Sources of information about the application (see page 12) This section describes sources of information about the application and lists websites that you can use to discuss the application's operation. Kaspersky Security 8.0 for Linux Mail Server (on page 14) This section contains information on the purpose, key features, and composition of the application. It shows the function of each part of the package supplied and a range of services available to registered users of the application. This section contains hardware and software requirements which the computer must meet for the installation of Kaspersky Security. Application architecture (see page 17) This section describes Kaspersky Security and the logic of their interaction. Installing and removing the application (see page 19) This section contains step-by-step instructions for application installation and removal. Manual integration of Kaspersky Security with mail servers and Amavis interface (see page 48) This section contains information about how to manually integrate Kaspersky Security for Linux Mail Server with Exim, Postfix, Sendmail, qmail, and Amavis. 8

9 A B O U T T H I S G U I D E Application licensing (see page 69) This section provides information about general terms related to the application activation. Read this section to learn more about the purpose of the License Agreement, ways of activating the application, and license renewal. Starting and stopping the application (see page 73) This section describes how you can start and stop the application. Mail server protection status (see page 74) This section contains information about how to check the level of protection of the mail server and related problems. Basic operating principles (see page 75) This section contains a description of the basic concepts and principles of using the application, and information about how to configure it. Anti-Spam protection (see page 84) This section contains information about Anti-Spam protection of messages and how to configure it. Anti-Virus protection (see page 92) This section contains information about Anti-Virus protection of messages and how to configure it. Anti-Phishing protection (see page 101) This section contains information about Anti-Phishing protection of messages and how to configure it. Content filtering of (see page 105) This section contains information about content filtering of messages and how to configure it. Kaspersky Security updates (see page 110) This section contains information on how to update application databases. Kaspersky Security advanced settings (see page 118) This section contains information on how to configure additional settings for the application. Integration with an external user service via LDAP (see page 121) This section contains information about how to integrate Kaspersky Security with an external user service using the LDAP protocol. Managing the application via SNMP (see page 127) This section contains information about how to use Kaspersky Linux Mail Security via the SNMP protocol and configure runtime trap events. Managing company employee accounts (see page 130) This section describes how you can manage accounts of company employees and configure their settings. 9

10 A D M I N I S T R A T O R ' S G U I D E Backup (see page 133) This section contains information about Backup and how to use it. notifications (see page 137) This section contains information about mail notifications and how to configure them. Runtime reports and statistics (see page 144) This section contains information about reports and statistics on the operation of the application. Event log (see page 148) This section contains information about the Event log and how to configure it. Trace log (see page 151) This section contains information about the Trace log and how to configure it. Application testing (see page 155) This section provides information about how to ensure that the application detects viruses and their modifications and performs the correct actions on them. Administering the application through Kaspersky Security Center (see page 158) This section describes how you can manage Kaspersky Security 8.0 for Linux Mail Server through Kaspersky Security Center. Contacting Technical Support (see page 162) This section provides information about how to obtain technical support and the requirements for receiving help from Technical Support. Annexes (see page 165) This section provides information that complements the document text. Kaspersky Lab ZAO (see page 168) This section provides information about Kaspersky Lab ZAO. Information on third-party code (see page 169) This section provides information about the third-party code used in the application. Trademark notices This section lists trademarks of third-party manufacturers that were used in the document. Index This section allows you to quickly find required information within the document. 10

11 A B O U T T H I S G U I D E DOCUMENT CONVENTIONS The document text is accompanied by semantic elements to which we recommend paying particular attention: warnings, hints, and examples. Document conventions are used to highlight semantic elements. Document conventions and examples of their use are shown in the table below. Download anime darker than black sub indo mkv 480p. Table 1. Document conventions SAMPLE TEXT Note that.. We recommend that you use.. Example: DESCRIPTION OF DOCUMENT CONVENTION Warnings are highlighted in red and boxed. Warnings provide information about possible unwanted actions that may lead to data loss, failures in equipment operation or operating system problems. Notes are boxed. Notes may contain useful hints, recommendations, specific values for settings, or important special cases in operation of the application. Examples are given on a yellow background under the heading 'Example'.. Update means.. The Databases are out of date event occurs. Press ENTER. Press ALT+F4. Click the Enable button. To configure a task schedule: In the command line, type help. The following message then appears: Specify the date in dd:mm:yy format. <User name> The following semantic elements are italicized in the text: new terms; names of application statuses and events. Names of keyboard keys appear in bold and are capitalized. Names of keys that are connected by a + (plus) sign indicate the use of a key combination. Those keys must be pressed simultaneously. Names of application interface elements, such as entry fields, menu items, and buttons, are set off in bold. Introductory phrases of instructions are italicized and are accompanied by the arrow sign. The following types of text content are set off with a special font: text in the command line; text of messages that the application displays on screen; data that the user must enter. Variables are enclosed in angle brackets. Instead of a variable, the corresponding value should be inserted, with angle brackets omitted. 11

12 SOURCES OF INFORMATION ABOUT THE APPLICATION This section describes sources of information about the application and lists websites that you can use to discuss the application's operation. You can select the most suitable information source, depending on the issue's level of importance and urgency. IN THIS SECTION Sources of information for independent research Discussing Kaspersky Lab applications on the forum Contacting the Sales Department Contacting the Localization and Technical Documentation Unit SOURCES OF INFORMATION FOR INDEPENDENT RESEARCH You can use the following sources to find information about the application: application page on the Kaspersky Lab website; application page on the Technical Support website (Knowledge Base); online help; documentation. If you cannot find a solution for your issue, we recommend that you contact Kaspersky Lab Technical Support (see the section 'Technical support by phone' on page 162). To use information sources on the Kaspersky Lab website, an Internet connection should be established. Application page on the Kaspersky Lab website The Kaspersky Lab website features an individual page for each application. On the page ( you can view general information about the application, its functions and features. The web page contains a link to a section describing the product and how to obtain a license or extend an existing one. The application's Knowledge Base page at the Technical Support Service website Knowledge Base is a section on the Technical Support website that provides advice on using Kaspersky Lab applications. The Knowledge Base comprises reference articles grouped by topics. On the page of the application in the Knowledge Base ( you can read articles that provide useful information, recommendations, and answers to frequently asked questions on how to purchase, install, and use the application. 12

13 S O U R C E S O F I N F O R M A T I O N A B O U T T H E A P P L I C A T I O N Articles may provide answers to questions that are out of scope of Kaspersky Linux Mail Security, being related to other Kaspersky Lab applications. They also may contain news from the Technical Support Service. Web interface help Help provides information on managing protection, configuring the application, and performing common user tasks using the web-interface of Kaspersky Security 8.0 for Linux Mail Server (hereinafter the 'web interface'). Documentation The distribution kit includes documents that help you to install and activate the application on the computers of a local area network, configure its settings, and find information about the basic techniques for using the application. To connect Kaspersky Security manual pages under the Linux operating system, add the following string to the /etc/manpath.config configuration file: MANPATH /opt/kaspersky/klms/share/man To connect Kaspersky Security manual pages under the FreeBSD operating system, add the following string to the /etc/manpath.config (or man.conf) configuration file: MANDATORY_MANPATH /usr/local/man DISCUSSING KASPERSKY LAB APPLICATIONS ON THE FORUM If your question does not require an immediate answer, you can discuss it with the Kaspersky Lab experts and other users in our forum ( In this forum you can view existing topics, leave your comments, create new topics. CONTACTING THE SALES DEPARTMENT If you have any questions on how to select, purchase, or renew the application, you can contact our Sales Department specialists in one of the following ways: By calling our central office in Moscow by phone ( By ing your question to The service is provided in Russian and English. CONTACTING THE LOCALIZATION AND TECHNICAL DOCUMENTATION UNIT To contact the Technical Writing and Localization Unit, send an to Please use 'Kaspersky Help Feedback: Kaspersky Security 8.0 for Linux Mail Server as the subject of your message. 13

14 KASPERSKY SECURITY 8.0 FOR LINUX MAIL SERVER Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 protects incoming and outgoing messages (or 'messages') against malware, spam and phishing, and provides content filtering. Kaspersky Security runs under Linux and FreeBSD operating systems, and can be used on high-load mail servers. The Application allows: Anti-Spam and Anti-Phishing scanning of incoming and outgoing mail. Detecting objects that are infected, probably infected, password-protected, or inaccessible for scanning. Neutralizing the threats revealed in files and mail messages; disinfecting objects. Saving Backup copies of messages before Anti-Virus scanning and filtering in Backup; saving messages from Backup to a file on the hard drive and delivering messages from Backup to recipients. Processing mail in accordance with the rules defined for existing groups of senders and recipients. Performing content filtering of messages by size, name, and type of attachments. Notifying the sender, recipients, and administrator of detected messages containing objects that are infected, probably infected, password-protected, or inaccessible for scanning. Updating the application databases (Anti-Virus, Anti-Spam, and Anti-Phishing databases) from the update servers of Kaspersky Lab according to schedule or on demand. Generating application runtime statistics and reports. Getting application runtime info and statistics via SNMP as well as enabling / disabling event traps. Scanning mail server file systems for threats on demand. Configuring the settings and managing the application using the standard tools of the operating system from the command line or using a web-based interface. All commands and paths in the document are specified for the Linux operating system. Information about application file locations on computers with the FreeBSD operating system is available in the 'Application file locations on a computer running FreeBSD section (see page 166)'. If you copy any code strings from the Guide to the mail server configuration file, be sure to delete the backslashes () and their trailing LFs. IN THIS SECTION Hardware and software requirements Distribution kit

15 K A S P E R S K Y S E C U R I T Y 8. 0 F O R L I N U X M A I L S E R V E R HARDWARE AND SOFTWARE REQUIREMENTS To ensure the functioning of Kaspersky Security, your computer should meet the following requirements: Minimum hardware requirements: Intel Xeon 3040 or Intel Core 2 Duo 1.86 GHz or faster processor; 2 GB RAM; at least 4 GB available for swap; 4 GB available on the hard drive to install application and store temporary and log files. Software requirements: One of the following 32-bit operating systems: Red Hat Enterprise Linux 6.4 Server. SUSE Linux Enterprise Server 11 SP3. CentOS-6.4. Ubuntu Server LTS. Ubuntu Server LTS. Debian GNU / Linux Debian GNU / Linux 7.1. FreeBSD 8.4. FreeBSD 9.1. Canaima 3.0. Asianux Server 4 SP1. One of the following 64-bit operating systems: Red Hat Enterprise Linux 6.4 Server. SUSE Linux Enterprise Server 11 SP3. CentOS-6.4. Novell Open Enterprise Server 11. Ubuntu Server LTS. Ubuntu Server LTS. Debian GNU / Linux Debian GNU / Linux 7.1. FreeBSD

16 A D M I N I S T R A T O R ' S G U I D E FreeBSD 9.1. Canaima 3.0. Asianux Server 4 SP1. Availability of the following packages of 32-bit libraries on 64-bit operating systems: ia32-libs for Debian and Ubuntu; libgcc.i686, glibc.i686 for RHEL and CentOS; libgcc-32bit, glibc-32bit for SUSE. Kaspersky Security requires the Perl 5 programming language of version or later. Kaspersky Security supports integration with the following mail servers: exim-4.71 or later; postfix-2.5 or later; qmail-1.03; sendmail-8.14 or later. To run the Kaspersky Security web interface, one of the following browsers must be installed on the computer: Mozilla Firefox 24. Internet Explorer 10. Google Chrome 30. To enable the operation of the Kaspersky Security web interface, an Apache web server must be installed on the computer hosting the web interface. DISTRIBUTION KIT You can purchase the application through Kaspersky Lab's online stores (for example, in the Online Shop section) or partner companies. The content of the distribution kit may differ depending on the region, in which the application is distributed. If Kaspersky Security is purchased through an online store, the application is copied from the store's website. Information required to activate the application is sent to you by after payment. For more details on ways of purchasing and the distribution kit, contact the Sales Department by the 16

17 APPLICATION ARCHITECTURE This section describes Kaspersky Security and the logic of their interaction. IN THIS SECTION Main components Operation algorithm MAIN COMPONENTS Kaspersky Security includes the following components: Filter receives and forwards mail messages to/from the application's mail server. Kaspersky Security includes several filters used in accordance with the mail server and the type of integration with Kaspersky Security: Milter. Smtp-proxy. Dlfunc. Qmail-queue binary. Klms-watchdog the main component for processing mail messages. It consists of the following modules: Scan Logic is a module that controls message scanning (hereinafter also 'Scan Logic module'). It includes a MIME parser and content filter. AV-engine scans messages for viruses (hereinafter 'the Anti-Virus engine'). AS-engine scans messages for spam (hereinafter 'the Anti-Spam engine'). AP-engine scans messages for phishing threats (hereinafter 'the Anti-Phishing engine'). Updater updates Anti-Virus, Anti-Spam, and Anti-Phishing databases. Backup allows messages to be restored to their original form with no changes. Auth interfaces with user registration systems. Statistics collects statistical information. Settings-manager stores task and rule settings for processing messages in the database; exports and imports these settings and notifies other modules of any changes. Facade allows the application to interface with utilities and administration systems. Licenser manages keys. Notifier generates messages with notifications of importance to the administrator. Event_manager delivers notifications about events to other application modules. 17

18 A D M I N I S T R A T O R ' S G U I D E Smtp_sender sends notifications. Task manager controls the start/stop sequence of other modules. Klms-postgres a database storing application settings, statistics for reports, and metadata of objects in Backup. Metadata of objects in backup may be stored in a database that is stored externally (outside the application). Klms-control a utility used to set application settings (task settings and message processing rules (see section 'About message processing rules' on page 76)), view runtime statistics, manage Backup, and run tasks. OPERATION ALGORITHM The application runs according to the following algorithm: 1. The filter receives a message from the mail server and forwards it to the Scan Logic module. 2. The Scan Logic message scanning control module determines the rule by which the application will process the message (see section 'About message processing rules' on page 76). 3. The application scans the message in accordance with the settings for the rule. If all scans are set to run in accordance with the rule settings, the application performs them in the following order: a. Anti-Spam scan; b. Anti-Virus scan (see section 'About Anti-Virus protection' on page 92); c. Anti-Phishing scan (see section 'About Anti-Phishing protection' on page 101); d. content filtering (see section 'About content filtering of messages' on page 105). 4. Based on the results of message scanning, Scan Logic adds a status tag at the beginning of the message subject (Subject field) and adds an information X-header (see section 'About information X-headers' on page 83) to the message header. 5. After completing all scans, depending on the message status (see section 'About scan and content filtering statuses' on page 75) the application takes the action (see section 'About actions on objects' on page 80) configured in the message processing rule settings on the message. Infected objects are treated by default, and cured if possible. 6. After scanning and processing, Scan Logic forwards the message to the filter. 7. The filter forwards the processed message with notifications on the scan and disinfection results to the mail server. 8. The mail server delivers the message to local users or routes it to other mail servers. 18

19 INSTALLING AND REMOVING THE APPLICATION This section contains step-by-step instructions for application installation and removal. IN THIS SECTION Preparing to install Upgrading from a previous version of the application Installing the application Preparing Kaspersky Security for operation Preparing Kaspersky Security web interface for operation Configuring administration of the application through Kaspersky Security Center Removing Kaspersky Security Actions after removing Kaspersky Security PREPARING TO INSTALL Before you install Kaspersky Security: make sure that your computer meets hardware and software requirements (see section 'Hardware and software requirements' on page 15); download the Kaspersky Security installation package in.tgz,.deb, or.rpm format from the website of the online store to your computer (see section 'Distribution kit' on page 16); install the glibc package (64-bit operating systems require the 32-bit version of glibc). Before installing Kaspersky Security on a computer running the Debian or Ubuntu operating system, you need to execute the following command: # locale-gen en_us.utf-8. The installation package for the Kaspersky Security web interface is required only if you want to manage the application through the browser. Before you install the Kaspersky Security web interface: make sure that your computer meets the hardware and software requirements; download the installation package for the Kaspersky Security web interface in.deb or.rpm format from the Online Shop (the installation package for the web interface is required only if you want to manage the application through the browser); 19

20 A D M I N I S T R A T O R ' S G U I D E install the following Apache modules: mod_ssl, mod_include, mod_dir, mod_expires (if not already installed) and enable them using the command: # a2enmod (if not already enabled): # a2enmod ssl # a2enmod include # a2enmod dir # a2enmod expires For the localization packages to work correctly, the system has to support the corresponding languages. For example, if you need to install the Russian localization package klms-l10n-ru_<version_number>_i386.deb under Debian GNU/Linux 6.0, make sure that the system supports the Russian language before installing it. To do so, execute the following command that shows the list of languages supported by the system: # locale -a If Russian is not on this list, you have to install it. Execute the following command: # dpkg-reconfigure locales Only then can you install the klms-l10n-ru_<version_number>_i386.deb package. Follow the same steps for the Chinese language or any other localization. UPGRADING FROM A PREVIOUS VERSION OF THE APPLICATION The process of upgrading Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 to Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 includes several stages: 1. Installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 package (see section 'Installing Kaspersky Security on top of the previous version' on page 21) on top the Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 package. 2. Updating Kaspersky Security settings (see page 22) using the application settings update script. 3. Installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface package (see section 'Installing the Kaspersky Security web interface on top of the previous version' on page 22) on top of the Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 web interface package. Steps 1 and 3 can be performed simultaneously if Kaspersky Security and the application web interface are installed on the same mail server. 4. Updating Kaspersky Security web interface settings (see page 23) using the application web interface settings update script. 5. Installing Kaspersky Security language packages (see section 'Preparing to install' on page 19) over the language packages of the previous application version. After Kaspersky Security is upgraded, the threat detection statistics, reports, and objects in Backup and Anti-Spam Quarantine are preserved. 20

21 I N S T A L L I N G A N D R E M O V I N G T H E A P P L I C A T I O N If Kaspersky Security localization packages were installed for the previous version of the application, it is required to delete localization packages prior to upgrading by executing the following command: # rpm -e klms_<localization> IN THIS SECTION Installing Kaspersky Security on top of the previous version Updating Kaspersky Security settings Installing the Kaspersky Security web interface on top of the previous version Updating Kaspersky Security web interface settings INSTALLING KASPERSKY SECURITY ON TOP OF THE PREVIOUS VERSION This section describes the procedure for installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 package on top of the Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 package on computers running under Linux and FreeBSD operating systems. Installing Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 on a computer running under the Linux operating system To install Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 from an RPM package, execute the following command: # rpm -U klms-<version number>.i386.rpm To install Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 from a DEB package on a 32-bit operating system, execute the following command: # dpkg -i klms_<version_number>_i386.deb To install Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 from a DEB package on a 64-bit operating system, execute the following command: # dpkg --force-architecture -i klms_<version_number>_i386.deb After running the command, the application is installed automatically. Installing Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 on a computer running under the FreeBSD operating system Prior to installing Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 on a computer running under the FreeBSD operating system, remove the previous version of Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1. To remove the previous version of Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1, execute the following command: # pkg_delete klms_<version_number> Do not run the klms-cleanup script after removing the previous version of Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1, as doing so will erase information about the configured application settings. 21

22 A D M I N I S T R A T O R ' S G U I D E To install Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1, execute the following command: # pkg_add klms_<version_number>.tgz After running the command, the application is installed automatically. After installing Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1, run the Kaspersky Security settings update script (see section 'Updating Kaspersky Security settings' on page 22). UPDATING KASPERSKY SECURITY SETTINGS After installing Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1, run the Kaspersky Security settings update script. The Kaspersky Security settings update script is included in the Kaspersky Security installation package. The configured application settings and mail server integration settings are preserved on computers running under the Linux operating system after Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 is upgraded to Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1. You have to update the Kaspersky Security settings in order to apply the values of settings that have been added or modified in Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1. The application has to be integrated with the mail server again manually or automatically on computers running under the FreeBSD operating system after Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 is upgraded to Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1. To run the Kaspersky Security settings update script, execute the following command: under Linux: # /opt/kaspersky/klms/bin/klms-upgrade.pl under FreeBSD: # /usr/local/bin/klms-upgrade.pl The script will prompt you to specify the values of Kaspersky Security settings one step at a time. When upgrading Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 to Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1, automatic update of application settings via the auto-reply file is not possible. INSTALLING THE KASPERSKY SECURITY WEB INTERFACE ON TOP OF THE PREVIOUS VERSION This section describes the procedure for installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface package on top of the Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 web interface package on computers running under Linux and FreeBSD operating systems. Installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface on a computer running under the Linux operating system To install the Kaspersky Security web interface from an RPM package on a 32-bit operating system, execute the following command: # rpm -U klmsui-<version_number>.i386.rpm 22

23 I N S T A L L I N G A N D R E M O V I N G T H E A P P L I C A T I O N To install the Kaspersky Security web interface from an RPM package on a 64-bit operating system, execute the following command: # rpm -U klmsui-<version_number>.x86_64.rpm To install the Kaspersky Security web interface from a DEB package on a 32-bit operating system, execute the following command: # dpkg -i klmsui_<version_number>_i386.deb To install the Kaspersky Security web interface from a DEB package on a 64-bit operating system, execute the following command: # dpkg -i klmsui_<version_number>_amd64.deb After the command is executed, the application web interface is installed automatically. Installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface on a computer running under the FreeBSD operating system Prior to installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface on a computer running under the FreeBSD operating system, remove the Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 web interface. To remove the Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 web interface, execute the following command: # pkg_delete klmsui-<version_number> To install the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface, execute the following command: # pkg_add klmsui-<version_number>.tgz After the command is executed, the application web interface is installed automatically. After installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface, run the Kaspersky Security web interface settings update script (see section 'Updating Kaspersky Security web interface settings' on page 23). UPDATING KASPERSKY SECURITY WEB INTERFACE SETTINGS After installing the Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1 web interface, run the Kaspersky Security web interface settings update script. The Kaspersky Security web interface settings update script is included in the Kaspersky Security web interface installation package. To run the Kaspersky Security web interface settings update script, execute the following command: under Linux: # /opt/kaspersky/klmsui/bin/klmsui-upgrade.pl under FreeBSD: # /usr/local/bin/klmsui-upgrade.pl When updating web interface of Kaspersky Security 8.0 for Linux Mail Server Critical Fix 1 to Kaspersky Security 8.0 for Linux Mail Server Maintenance Pack 1, automatic update of application settings via the auto-reply file is not possible. 23

How To Fix A Closure Improperly Installed

24 A D M I N I S T R A T O R ' S G U I D E INSTALLING THE APPLICATION The installation includes several steps: 1. Installing the Kaspersky Security package (see section 'Step 1. Installing the Kaspersky Security package' on page 24). You must have root privileges to initiate installation of the Kaspersky Security package. 2. Installing the Kaspersky Security web interface package (see section 'Step 2. Installing the Kaspersky Security web interface package' on page 24). Installation of this package is required only if you want to manage the application through the browser. 3. Installing localization packages. Installation packages must be installed prior to running initial application configuration scripts of Kaspersky Security. Only in this case will you be able to read the License Agreement and the Kaspersky Security Network Statement in the right language. IN THIS SECTION Step 1. Installing the Kaspersky Security package Step 2. Installing the Kaspersky Security web interface package STEP 1. INSTALLING THE KASPERSKY SECURITY PACKAGE Kaspersky Security is distributed in packages in.tgz,.deb, and.rpm format. To install Kaspersky Security from an.rpm package, execute the following command: # rpm -i klms-<version_number>.i386.rpm To install Kaspersky Security from a.deb package on a 32-bit operating system, execute the following command: # dpkg -i klms_<version_number>_i386.deb To install Kaspersky Security from a.deb package on a 64-bit operating system, execute the following command: # dpkg --force-architecture -i klms_<version_number>_i386.deb After running the command, the application is installed automatically. After Kaspersky Security has been installed, run the Kaspersky Security initial configuration script (see section 'Preparing Kaspersky Security for operation' on page 26). STEP 2. INSTALLING THE KASPERSKY SECURITY WEB INTERFACE PACKAGE The Kaspersky Security web interface can be installed from a.deb or.rpm package. To install the web interface from a.deb package on a 32-bit operating system, execute the following command: # rpm -i klmsui-<version_number>.i386.rpm 24

25 I N S T A L L I N G A N D R E M O V I N G T H E A P P L I C A T I O N To install the web interface from a.deb package on a 64-bit operating system, execute the following command: # rpm -i klmsui-<version_number>.x86_64.rpm To install the web interface from a.deb package on a 32-bit operating system, execute the following command: # dpkg -i klmsui_<version_number>_i386.deb To install the web interface from a.deb package on a 64-bit operating system, execute the following command: # dpkg -i klmsui_<version_number>_amd64.deb To install the web interface on a computer running under the FreeBSD operating system, execute the following command: # pkg_add klmsui-<version_number>.tgz After the Kaspersky Security web interface has been installed, run the Kaspersky Security web interface initial configuration script (see section 'Preparing Kaspersky Security web interface for operation' on page 39). INSTALLING THE WEB INTERFACE PACKAGE ON A DIFFERENT COMPUTER This section describes the case when the web server and the mail server are installed on different computers. The Kaspersky Security web interface can be installed from a.deb or.rpm package. To install the web interface from a.deb package on a 32-bit operating system, execute the following command: # rpm -i klmsui-<version_number>.i386.rpm To install the web interface from a.deb package on a 64-bit operating system, execute the following command: # rpm -i klmsui-<version_number>.x86_64.rpm To install the web interface from a.deb package on a 32-bit operating system, execute the following command: # dpkg -i klmsui_<version_number>_i386.deb To install the web interface from a.deb package on a 64-bit operating system, execute the following command: # dpkg -i klmsui_<version_number>_amd64.deb To install the web interface on a computer running under the FreeBSD operating system, execute the following command: # pkg_add klmsui-<version_number>.tgz To configure the Facade module that enables the application to interact with utilities and administration systems: 1. Export the Facade task settings to an XML file using the command: --get-settings <Facade task ID> -f <settings file name> or --get-settings Facade -n -f <name of the settings file> 2. Open the XML file to edit the task settings. 25

26 A D M I N I S T R A T O R ' S G U I D E 3. In the <port> </port> section, specify the port for interaction with the web interface. 4. In the <interfaceaddress> </interfaceaddress> section, specify the IP address of the computer where the web interface is installed. 5. Save the changes made. 6. Import the Facade task settings from an XML file using the command: --set-settings <Facade task ID> -f <name of the settings file> or --get-settings Facade -n -f <name of the settings file> To configure the connection to the Apache web server: 1. Open the /etc/apache2/conf.d/klmsui.conf file with web interface settings. 2. Specify the IP address of the mail server and the port of the Facade module in the line FastCgiExternalServer /opt/kaspersky/klmsui/share/htdocs/cgi-bin/klwi -host :2711. After the Kaspersky Security web interface has been installed, run the Kaspersky Security web interface initial configuration script (see section 'Preparing Kaspersky Security web interface for operation' on page 39). PREPARING KASPERSKY SECURITY FOR OPERATION After the installation, Kaspersky Security needs to be configured. Kaspersky Security initial configuration consists of a series of steps in the form of a script for the user's convenience. The initial configuration script should be started after Kaspersky Security has been installed. The initial configuration script for Kaspersky Security is included in the installation package. To run the Kaspersky Security initial configuration script, execute the following command: under Linux: # /opt/kaspersky/klms/bin/klms-setup.pl under FreeBSD: # /usr/local/bin/klms-setup.pl 26

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Error Number:	Error 45
Error Name:	Kaspersky Administration Server Connection Error Code 45
Error Description:	Error 45: Kaspersky Anti-Virus has encountered a problem and needs to close. We are sorry for the inconvenience.
Developer:	Kaspersky Lab
Software:	Kaspersky Anti-Virus
Applies to:	Windows XP, Vista, 7, 8

Compatible with Windows 10, 8, 7, Vista, XP and 2000

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Symptoms of Error 45

• 'Error 45' appears and crashes the active program window.
• Your PC frequently crashes with Error 45 when running the same program.
• “Kaspersky Administration Server Connection Error Code 45” is displayed.
• Windows runs sluggishly and responds slowly to mouse or keyboard input.
• Your computer periodically “freezes” for a few seconds at a time.

These 45 error messages can appear during program installation, while a Kaspersky Lab-related software program (eg. Kaspersky Anti-Virus) is running, during Windows startup or shutdown, or even during the installation of the Windows operating system. Keeping track of when and where your 45 error occurs is a critical piece of information in troubleshooting the problem.

Causes of Error 45

• Corrupt download or incomplete installation of Kaspersky Anti-Virus software.
• Corruption in Windows registry from a recent Kaspersky Anti-Virus-related software change (install or uninstall).
• Virus or malware infection that has corrupted Windows system files or Kaspersky Anti-Virus-related program files.
• Another program maliciously or mistakenly deleted Kaspersky Anti-Virus-related files.

Runtime Errors such as “Error 45” can be caused by a variety of factors, so it is important that you troubleshoot each of the possible causes to prevent it from recurring.

Runtime Errors Knowledgebase

Article ID:

124933

Article Author:

Last Updated:

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Below is a list of troubleshooting steps to resolve your Error 45 problems. These troubleshooting steps get progressively more difficult and time consuming, so we strongly recommend attempting them in ascending order to avoid unnecessary time and effort.

Please Note: Click the [ ] image to expand the troubleshooting instructions for each step below. You can also click the [ ] image to hide the instructions as you proceed through each step.

Step 1: Repair Registry Entries Associated with Error 45

Manually editing the Windows registry to remove invalid Error 45 keys is not recommended unless you are PC service professional. Incorrectly editing your registry can stop your PC from functioning and create irreversible damage to your operating system. In fact, one misplaced comma can prevent your PC from booting entirely! Because of this risk, we highly recommend using a trusted registry cleaner such as WinThruster [download] (Developed by Microsoft Gold Certified Partner) to scan and repair any Error 45-related registry problems. Using a registry cleaner [download] automates the process of finding invalid registry entries, missing file references (like the one causing your 45 error), and broken links within the registry. A backup is automatically created before each scan, with the ability to undo any changes in a single click, protecting you against the possibility of PC damage. The best part is that repairing registry errors [download] can also dramatically improve system speed and performance. Caution: Unless you an advanced PC user, we DO NOT recommend editing the Windows registry manually. Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows. We do not guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. To manually repair your Windows registry, first you need to create a backup by exporting a portion of the registry related to Error 45 (eg. Kaspersky Anti-Virus): Click the Start button. Type 'command' in the search box.. DO NOT hit ENTER yet! While holding CTRL-Shift on your keyboard, hit ENTER. You will be prompted with a permission dialog box. Click Yes. A black box will open with a blinking cursor. Type 'regedit' and hit ENTER. In the Registry Editor, select the Error 45-related key (eg. Kaspersky Anti-Virus) you want to back up. From the File menu, choose Export. In the Save In list, select the folder where you want to save the Kaspersky Anti-Virus backup key. In the File Name box, type a name for your backup file, such as 'Kaspersky Anti-Virus Backup'. In the Export Range box, be sure that 'Selected branch' is selected. Click Save. The file is then saved with a .reg file extension. You now have a backup of your Kaspersky Anti-Virus-related registry entry. The next steps in manually editing your registry will not be discussed in this article due to the high risk of damaging your system. If you would like to learn more about manual registry editing, please see the links below. We do not claim any responsibility for the results of the actions taken from the content linked below - complete these tasks at your own risk. Windows XP http://www.theeldergeek.com/windows_xp_registry.htm Windows 7 http://www.theeldergeek.com/windows_7/registry_edits_for_win7.htm Windows Vista http://support.microsoft.com/kb/2688326 - LetMeFixItMyselfAlways

Step 2: Conduct a Full Malware Scan of Your PC

There is a chance that your 45 error could be related to a malware infection on your PC. These malicious intruders can damage, corrupt, or even delete Runtime Errors-related files. Furthermore, there's a possibility that the 45 error you are experiencing is related to a component of the malicious program itself. Tip: If you do not already have a malware protection program installed, we highly recommend using Emsisoft Anti-Malware (download here). They offer a malware removal guarantee that is not offered by other security software.

Step 3: Clean Out Your System Junk (Temporary Files and Folders) With Disk Cleanup (cleanmgr)

Over time, your computer accumulates junk files from normal web surfing and computer use. If this junk isn't occasionally cleaned out, it can cause Kaspersky Anti-Virus to respond slowly or provides an 45 error, possibly due to file conflicts or an overloaded hard drive. Cleaning up these temporary files with Disk Cleanup might not only solve your 45 error, but can also dramatically speed up the performance of your PC. Tip: Although Disk Cleanup is a wonderful built-in tool, it will not completely clean up all of the temporary files on your computer. Other programs that you frequently use such Microsoft Office, Firefox, Chrome, Live Messenger, and hundreds of other programs are not cleaned up with Disk Cleanup (including some Kaspersky Lab programs). Because of the shortcomings of the Windows Disk Cleanup (cleanmgr) tool, we highly recommend using a specialized hard drive cleanup / privacy protection software such as WinSweeper [download] (Developed by Microsoft Gold Partner) to clean up your entire computer. Running WinSweeper [download] once per day (using automatic scanning) will ensure that your computer is always clean, running fast, and free of 45 errors related to temporary files. How to run Disk Cleanup (cleanmgr) (Windows XP, Vista, 7, 8, and 10): Click the Start button. Type 'command' in the search box.. DO NOT hit ENTER yet! While holding CTRL-Shift on your keyboard, hit ENTER. You will be prompted with a permission dialog box. Click Yes. A black box will open with a blinking cursor. Type 'cleanmgr' and hit ENTER. Disk Cleanup will begin calculating how much occupied disk space you can reclaim. The Disk Cleanup dialog box will appear with series of checkboxes you can select. In most cases, the 'Temporary Files' category will occupy the most disk space. Check the boxes of the categories you want to clean and click OK.

Step 4: Update Your PC Device Drivers

45 errors can be related to corrupt or outdated device drivers. Drivers can work one day, and suddenly stop working the next day, for a variety of reasons. The good news is that you can often update the device driver to fix the Error 45 problem. Finding the exact driver for your Error 45-related hardware device can be extremely difficult, even directly on the Kaspersky Lab or related manufacturer's website. Even if you are experienced at finding, downloading, and manually updating drivers, the process can still be very time consuming and extremely irritating. Installing the wrong driver, or simply an incompatible version of the right driver, can make your problems even worse. Because of the time and complexity involved in updating drivers, we highly recommend using a driver update tool such as DriverDoc (Developed by Microsoft Gold Partner) to automate the process. DriverDoc updates all of your PC device drivers, not just those associated with your 45 error. DriverDoc's proprietary One-Click Update™ technology not only ensures that you have correct driver versions for your hardware, but it also creates a backup of your current drivers before making any changes. Maintaining a driver backup provides you with the security of knowing that you can rollback any driver to a previous version if necessary. With updated device drivers, you can finally unlock new hardware features and improve the speed and performance of your PC. Please Note: Your Error 45 may not be related to hardware driver problems, but it's always a good idea to ensure all of your PC device drivers are up-to-date to maximize PC performance.

Step 5: Utilize Windows System Restore to 'Undo' Recent System Changes

Windows System Restore allows you to 'go back in time' with your PC to help fix your Error 45 problems. System Restore can return your PC's system files and programs back to a time when everything was working fine. This can potentially help you avoid hours of troubleshooting headaches associated with 45 errors. Please Note: Using System Restore will not affect your documents, pictures, or other data. To use System Restore (Windows XP, Vista, 7, 8, and 10): Click the Start button. In the search box, type 'System Restore' and hit ENTER. In the results, click System Restore. Enter any administrator passwords (if prompted). Follow the steps in the Wizard to choose a restore point. Restore your computer.

Step 6: Uninstall and Reinstall the Kaspersky Anti-Virus Program Associated with Error 45

If your 45 error is related to a specific program, reinstalling Kaspersky Anti-Virus-related software could be the answer. Instructions for Windows 7 and Windows Vista: Open Programs and Features by clicking the Start button. Click Control Panel on the right side menu. Click Programs. Click Programs and Features. Locate Kaspersky Administration Server Connection Error Code 45-associated program (eg. Kaspersky Anti-Virus) under the Name column. Click on the Kaspersky Anti-Virus-associated entry. Click the Uninstall button on the top menu ribbon. Follow the on-screen directions to complete the uninstallation of your Error 45-associated program. Instructions for Windows XP: Open Programs and Features by clicking the Start button. Click Control Panel. Click Add or Remove Programs. Locate Kaspersky Administration Server Connection Error Code 45-associated program (eg. Kaspersky Anti-Virus) under the list of Currently Installed Programs. Click on the Kaspersky Anti-Virus-associated entry. Click the Remove button on the right side. Follow the on-screen directions to complete the uninstallation of your Error 45-associated program. Instructions for Windows 8: Hover the cursor in the bottom left of the screen to produce the Start Menu image. Right-Click to bring up the Start Context Menu. Click Programs and Features. Locate Kaspersky Administration Server Connection Error Code 45-associated program (eg. Kaspersky Anti-Virus) under the Name column. Click on the Kaspersky Anti-Virus-associated entry. Click the Uninstall/Change on the top menu ribbon. Follow the on-screen directions to complete the uninstallation of your Error 45-associated program. After you have successfully uninstalled your Error 45-associated program (eg. Kaspersky Anti-Virus), reinstall the program according to the Kaspersky Lab instructions. Tip: If you are positive that your 45 error is related to a specific Kaspersky Lab program, uninstalling and reinstalling your Error 45-related program will likely be the solution to your problem.

Step 7: Run Windows System File Checker ('sfc /scannow')

System File Checker is a handy tool included with Windows that allows you scan for and restore corruptions in Windows system files (including those related to Error 45). To run System File Checker (Windows XP, Vista, 7, 8, and 10): Click the Start button. Type 'command' in the search box.. DO NOT hit ENTER yet! While holding CTRL-Shift on your keyboard, hit ENTER. You will be prompted with a permission dialog box. Click Yes. A black box will open with a blinking cursor. Type 'sfc /scannow' and hit ENTER. System File Checker will begin scanning for Error 45 and other system file problems (be patient - the system scan may take a while). Follow the on-screen commands.

Step 8: Install All Available Windows Updates

Microsoft is constantly updating and improving Windows system files that could be associated with Error 45. Sometimes resolving your Runtime Errors problems may be as simple as updating Windows with the latest Service Pack or other patch that Microsoft releases on an ongoing basis. To check for Windows Updates (Windows XP, Vista, 7, 8, and 10): Click the Start button. Type 'update' into the search box and hit ENTER. The Windows Update dialog box will appear. If updates are available, click the Install Updates button.

Step 9: Perform a Clean Installation of Windows

Caution: We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve Error 45 problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately (download a highly-recommended backup solution) to protect yourself from permanent data loss. This step is your final option in trying to resolve your Error 45 issue. Reinstalling Windows will erase everything from your hard drive, allowing you to start again with a fresh system. Furthermore, a clean install of Windows will also quickly clean out any and all 'junk' that has accumulated over the normal usage of your computer. Please Note: If 45 errors still persist after a clean install of Windows, your Runtime Errors problem MUST be hardware related. If that is the case, then it is likely you will need to replace the associated hardware causing the 45 error.

Recommendation:Scan your PC for computer errors.

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Operating System Information

45 error messages can occur in any of the following Microsoft Windows operating systems:

• Windows 10
• Windows 8
• Windows 7
• Windows Vista
• Windows XP
• Windows ME
• Windows 2000

Are You Still Experiencing Error 45 Issues?

Please reach out to us anytime on social media for more help:

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About The Author:Jay Geater is the President and CEO of Solvusoft Corporation, a global software company focused on providing innovative utility software. He is a lifelong computer geek and loves everything related to computers, software, and new technology.

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