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Known Problem

KSC backup fails with "Error -1963 ('Database connection is broken " 'Connection failure{08S01};' [KSC for Windows]

Scenario After the deployment of KSC in the environment, the Backup task fails with the following error using the KSC Backup task or klbackup utility (screenshot is below). All the permissions were correctly assigned on the shared folder, and ports were opened, but still the backup was failing. There were no blocking events in the Firewall traffic logs. Error -1963 ('Database connection is broken " 'Connection failure{08S01};' LastStataement='select type from sys.system_object whe
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Known Problem

KSC Application registry doesn't clear information about deleted applications [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials. Application registry in KSC contains information about applications that was deleted. Reinstalling Network Agent on a workstation should solve a problem. This behavior can be caused by per-user applications. You can alter how long network agent will retain information about applications on a managed workstation: On a managed workstation : Add a registry key: [HKEY_LOCAL_MACH
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Known Problem

KSC API use cases examples - tasks results and statistics data for Dashboards and Reports [KSC for Windows]

Description and cautions The article shares working examples of using KSC API calls for one of the available scenarios - retrieving tasks results and statistics data for Dashboards and Reports. For the Windows version of cURL, you need to specify that the arguments need to be escaped with "\", otherwise there will be an error. For example:  'Authorization: KSCBasic user=\"YXBpLXVzZXI=\", pass=\"cGFzc3dvcmQ=\", internal=\"1\"' Details Prerequisites internal
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Known Problem

KSC API use cases examples - retrieving Events, HW, SW inventory [KSC for Windows]

Description and cautions The article shares working example of using KSC API calls for one of the available scenarios - retrieving events, HW and/or SW inventory data. For the Windows version of cURL, you need to specify that the arguments need to be escaped with "\", otherwise there will be an error. For example:  'Authorization: KSCBasic user=\"YXBpLXVzZXI=\", pass=\"cGFzc3dvcmQ=\", internal=\"1\"' Details Prerequisites internal user: api-user Exa
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Known Problem

KSC API use cases examples - publishing KSC virtual server Administration Agent package [KSC for Windows]

Description and cautions The article shares working examples of using KSC API calls for one of the available scenarios - publishing KSC virtual server Administration Agent package. For the Windows version of cURL, you need to specify that the arguments need to be escaped with "\", otherwise there will be an error. For example:  'Authorization: KSCBasic user=\"YXBpLXVzZXI=\", pass=\"cGFzc3dvcmQ=\", internal=\"1\"' Details Prerequisites Make sure
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Known Problem

KSC and ROBOT attack [KSC for Windows]

This article explains ROBOT attack, RSA Key Exchange, OpenSSL and KSC. Explanation If you are running security analyzer and it shows that connections on ports 13000 (server-nagent traffic) and 17000 (activation proxy) are suspicious for a ROBOT attack, don't panic. Automatic analysis is not accurate. Run specific diagnostics to make sure that KSC traffic is actually not vulnerable. Examples: https://testssl.sh/ https://github.com/robotattackorg/robot-det
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Known Problem

Issue with encoding of events transferred to SIEM by the KSC [Kaspersky Security Center]

KSC sends events to SIEM in UTF-8 encoding. If the events received from KSC in the SIEM system look unreadable, for example, like this: Тип приложениÑ: ÐеизвеÑтное приложение\r\nÐаправление: ВходÑщее\r\nПротокол: ICMPv6\r\nСтатуÑ: Разрешено\r\nУдаленныРIt is necessary to configure UTF-8 encoding in the SIEM system itself.
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Known Problem

Install required updates and fix vulnerabilities task malfunctions after changing KSC Service account [Kaspersky Security Center for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials. Problem You change the account of the administration server service via the klsrvswch tool. Note that this is the only way to change the account, manual modification (for example, via services.msc) is not supported.  Then, the you run the Install required updates and fix vulnerabilities task. As a result, the task is cancelled and updates are not installed.  Diagnostics The following
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Known Problem

Importing a new SSL certificate for KSC Web Console [Kaspersky Security Center]

Problem After importing a custom certificate instead of a default self-signed one for accessing KSC 13 Web Console, you cannot reach Web Console. When using the default certificate, there is now issue with Web Console. Solution There are several causes and solutions for this issue: You might be using Internet Explorer or any other unsupported browser to access Web Console. So first we need to check if the browser is supported by KSC. Ref : https://support.kas
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Known Problem

How a Distribution Point for a host is selected [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.   If two different update agents on a PC are assigned in different ways: To an administration group. Based on a network location. Which one will have a higher priority for the PC? Among the update agents assigned to administration groups, the one assigned to the administration group, that is closest to the target host in the group hierarchy, has the higher priority. If the upd
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Known Problem

Get error "curl: (58) schannel: Failed to import cert file" when sending a request via KPSN API from Windows client [Kaspersky Private Security Network]

Issue An attempt to send POST request via KPSN API from a Windows client.: curl --cert C:\\Users\\user_A\\Desktop\\kpsn_api kpsn_api_crt.pem --key C:\\Users\\user_A\\Desktop\\kpsn_api kpsn_api_key.pem -k -X POST -d "{\\"action ": \\"check_url\\",\\"data ": {\\"urls ": [\\"website1.com "]}}" https://10.90.116.27:80/api/ Fails with the following error: curl: (58) schannel: Failed to import cert file C:\\Users\\user_A\\Desktop\\kpsn_api kpsn_api_crt.pem, last error is 0x80092002 Th
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Known Problem

Get error "curl: (58) schannel: Failed to import cert file" when sending a request via KPSN API from Windows client [Kaspersky Private Security Network]

Issue An attempt to send POST request via KPSN API from a Windows client.: curl --cert C:\\Users\\user_A\\Desktop\\kpsn_api kpsn_api_crt.pem --key C:\\Users\\user_A\\Desktop\\kpsn_api kpsn_api_key.pem -k -X POST -d "{\\"action ": \\"check_url\\",\\"data ": {\\"urls ": [\\"website1.com "]}}" https://10.90.116.27:80/api/ Fails with the following error: curl: (58) schannel: Failed to import cert file C:\\Users\\user_A\\Desktop\\kpsn_api kpsn_api_crt.pem, last error is 0x8009200
Stan Shpatar

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Known Problem

Fix vulnerabilities task fails with error 'Transaction became the database conflict victim: '1205, ...' [KSC for Windows]

Problem While running Fix vulnerabilities task, the following error can occur: 'Transaction became the database conflict victim: '1205, 'Lock wait timeout exceeded; try restarting transaction' , LastStatement='CALL vapm_arrange_task_updates(119, 0xC89EAD3312227039C9FAC933840D7936)' Solution Most possible, the reason of the problem is that you have Fix vulnerabilities task or tasks with a big number of vulnerabilities that should be fixed inside one task. For example, you scro
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Known Problem

Failed to install the software module update - Bad Junction [KSC for Windows]

Problem Description, Symptoms & Impact When deploying Auto patches from KSC, installing Network Agent or Kaspersky Endpoint Security, installation fails with bad junction errors. Diagnostics While Auto patch deployments over KSC will directly generate an event in Events section of KSC, manual Network Agent or KES installations will end with Fatal Error message and installation logs will contain information such as below: Application: Kaspersky Security Cent
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Known Problem

Events are not received by KSC or not transferred to SIEM [KSC for Windows]

Problem Sometimes the problem with events receiving/transferring on KSC (including export to SIEM) may occur. The first thing that you have to check is Kaspersky Event Log. The following warnings may occur: Warning Total number of events stored in database (4010532) has exceeded the actual limit of 4000000 event(s). Starting to delete excessive events from the database... Warning 600 event(s) have been deleted from the database because the limit
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Known Problem

Errors "0x52E", "0x200A" and "'Access is denied" when deleting a task [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials. These errors appear when the remote installation task of NAgent or KES with NAgent was created with the Assign package installation in Active Directory group policies option selected. At the first startup they start under the account specified in the New Task Wizard. If that user has access for creating domain policies and groups, the task will be completed successfully, and "GPO" and "Security Group" w
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Known Problem

Error 80240037 Windows patch management [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.   Problem: You have a new CPU in your managed device and Windows operating system released prior to Windows 10\Windows Server 2016. Start "Find vulnerabilities and required updates" for a managed devices. Task results and Kaspersky Event log on a workstation may indicate a following error: Windows Update Agent error 80240037 ("The functionality for the operation is not supported.") #1181 (
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Known Problem

Equality logic in subnet conditions of klnagent connection profiles [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials. Consider the following scenario: You have a large local area network 10.36.0.0/16. There is a managed device with the following IP config: IPv4 address: 10.36.35.10 and Subnet Mask: 255.255.255.0. You create a new subnet condition for klnagent connection profile: 10.36.0.0/16. Actual result: The connection profile is not applied to the managed device. The reason of this behavior is equali
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Known Problem

Deployment of a Kaspersky failover cluster [KSC for Windows]

Description and cautions That article is describing a specific scenario: HA Cluster KSC with 4 CGWs between two different and geographical isolation DC (Data Center). High level procedure: KLAdmins group: ksc, rightless / gmsa-ksc-server, gmsa-ksc-nwc; $KSC-NODE-1, $KSC-NODE-2, $SQL-SRV / sql / gmsa-sql-server SMB shares: data, state, sc_backup, kl-share | SMB Permissions NTFS ACL - - Full Control for KLAdmins Created MS SQL Database - KLFOC | Grand Access
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Known Problem

Configuring domain authentication by using NTLM and Kerberos protocols [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials. The article is giving a working configuration instructions for domain authentication by using NTLM and Kerberos protocols. NOTE: Domain authentication in OpenAPI over Kerberos protocol has the following restrictions: Administration Server address must be specified exactly as the address for which the Service Principal Name (SPN) is registered for domain account name. In the domain, yo
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Known Problem

Computer description field is not updated on KSC console

Problem Computer description may stop updating on KSC console. It may be different from what is set on managed PC in computer properties. Solution If computer description field was changed on KSC side manually it will no be updated again. To enable synchronization with local description you have to delete the computer from managed computers group, then from unassigned, and add it back. In case it did not help check that the following services are enabled (set to automatic sta
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Known Problem

Akconnect utility description [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials. When troubleshooting typical KSC issues, you will likely need to check the availability of TCP port 13000 on the KSC Server.  Both telnet and akconnect tools can be used to achieve this. Syntax is very simple: akconnect host port Examples: akconnect.exe 192.168.1.19 13000 >akconnectoutput.txt telnet 192.168.1.19 13000 >telnetoutput.txt Where 192.168.1.19 is the IP address or DN
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Known Problem

"Administration Server has untrusted self signed certificate" error in Web Console [KSC for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials. Scenario: When login to KSC Web Console, it shows the following error: Administration Server uses an untrusted self-signed certificate. Please modify the application configuration by specifying a valid certificate for Administration Server. Alternative wording (for older KSC versions): Administration Server has untrusted self signed certificate. Please, reconfigure the application with corre
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