Problem
There are several problems with similar causes:
1) KESL postinstall script produces error.
Warning: Failed to set up KSN
2) KESL is installed and running. However, the kesl-control command outputs something like that:
kesl-control --app-info
Connection refused. Invalid user permissions for /var.
Only root user should have write access to this path.
kesl-control --app-info
Could not connect to Kaspersky Endpoint Security 11.2.2 for Linux
Description
Starting from KES Windows version 12.6, it can parse third-party mail base files, but still can't re-assemble them. Malware scan tasks runs in folders where mail base files for Thunderbird or TheBat! are located and finds threats in old mail items.
Diagnostics
After choosing Resolve or setting "Disinfect, delete if disinfection fails" in the KSC task, nothing changes, and another malware scan task anyway finds the same threats.
Workaround and solution
Sinc
Scenario
Enable Network Threat Protection
Connect another Mac via a thunderbolt cable
Try to send any data from one computer to another
Connection times out
Workaround & Solution
Connect computers by other means or disable NTP when using Thunderbolt bridge.
RCA
This issue is caused by a bug in macOS' built-in packet filter and was reported to apple.
Problem Description, Symptoms & Impact
Local installation from a standalone package fails
Diagnostics
Check installation logs of the product. We are looking for the following string:
09.02.2022 17:06:19.453 00000374.000028B4 L1 KLSTD: #1, Error was caught in KLERR_throwError, c:\a\b\a_6vlf7p9h\s\csadminkit\development2\klri\pkginst\klpkinst.cpp@1061. Error params: (1187/0x0 ("Bad parameter "VerifyCertDate""), "KLSTD", c:\a\b\a_6vlf7p9h\s\csadminkit\development2\klri\pkgi
Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.
This article is about Kaspersky Endpoint Security for Windows (KES for Windows)
Problem
When KES installation fails with error message "Failed to access local group policy. Error 0x80004005", installation log should be checked. If it contains something similar, follow the steps below.
MSI (s) (F4:94) [11:27:28:103]: Invoking remote custom action. DLL: C:\WINDOWS\Installer\MS
Symptoms
OS hang, sometimes with open file errors in journals
Customer application degrades with errors "unable to open file", "too many open files"
Hangs and third-party (compatibility) issues often require advanced data collection and are sophisticated to investigate. However, a quick check is possible:
On a system where KESL has worked for some time (not immediately after reboot/restart), validate the output of the following command, ran as root, for numerous r
The KESMac 12 and the KESMac 11.3 patch C allows adding particular processes into the trusted section named Trusted Applications.
The both filesystem and network activity of which can be ignored by the product increasing performance.
Please, however, note that this could be potentially risky.
https://support.kaspersky.com/KESMac/11.3_adminguide/en-US/194142.htm
Problem
This article will describe a few ways to configure KES for Mac to exclude some of the software from th
Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.
Problem Description, Symptoms & Impact
KES File Threat Protection sometimes can't check Microsoft office documents from mounted Google Drive shares, therefore generating Processing error events. This issue is caused by an incompatibility between Google Drive VFS driver and KES. There are no plans on making KES compatible with Google Drive.
Workaround & Solution
As a workaround, add fil
Problem
While WTP/NTP is enabled, nft utility produces errors (stderr) like
# nft list ruleset
XT target TPROXY not found
XT target TPROXY not found
XT target TPROXY not found
XT target TPROXY not found
These errors are caused by a bug in nft ut
Problem Description, Symptoms & Impact
In KES 12.0, the way Device Control component works has been changed. See changelog: https://support.kaspersky.com/help/KESWin/12.0/en-US/127969.htm
Due to these changes, you may notice that printing order becomes slow after you have upgraded KES to version 12.0 or higher. This delay may be around 30-60s or even 10-15 minutes. When you disable KES, it becomes instant. In some exceptional cases, the delay may be so big that it's impossible to p
Description
VMWare guest using Kaspersky products hanging or crashing due to driver conflicts between drivers used by VMWare NSX (vnetWFP.sys, previously vnetflt.sys) and Network Threat Protection component.
This problem is known to happen with following versions of KES and VMware Tools:
KES 11.6 with VMWare Tools 10.0.9
KES 11.6 and 11.7 with VMWare Tools 11.3.5
KES 12 with VMWare Tools 10.1.7
Troubleshooting steps
Update VMWare Tools
Somet
Problem Description
While installing KES for Windows via KSC installation package the following error appears and interferes with installation.
Possible causes:
KES components installed already before installation.
Required driver files were not found.
Workaround & Solution
Use kavremover and reinstall KES with the latest patch.
In case kavremover will not help, please collect procmon and KES installation logs, actual GSI with e
Problem
kesl-control --app-info outputs the following error:
en
File Threat Protection: Unavailable due to file interceptor driver error
One of the most common root causes is Fanotify is disabled (or KESL could not access it) and kernel module compilation also failed.
A special utility can be used for this directly on the affected mac
Download KES distributive
Unpack to the folder
Copy patch .msp file (i.e. pf1794.msp) to the same folder
In KSC create Installation package using the files from this folder
Install
Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.
This article is about Kaspersky Endpoint Security for Windows (KES for Windows)
This informational message does not mean that Self-Defense accuses any process of being under malware attack, it proactively blocks certain operations that could pose a potential threat to processes.
The number of events depends on the activity of applications that inhabit the system, especially from their periodic acti
Issue
Sometimes Device Control errors in KES may occur. For example, hard drives are wrongly blocked when USB device blocking is enabled, or flash drive blocking is not happening although the policies require to do so.
In some cases, the reason for erroneous blocking is that the operating system (OS) is incorrectly identifying the device type.
Solution
As an example, if the policies prohibit access to flash drives, but this rule does not always work, you can check the followi
How to check if KES is installed, its state (running or not) and bases version via registry:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\KasperskyLab\Components\34\1103\1.0.0.0\Statistics\AVState
More information about these registry keys is available in Online Help: https://support.kaspersky.com/ksc14/3644.
Obtaining information from the registry is for familiarization purposes only. KESCLI commands method supported by developers:
Managing the application from the command
This only applies to KSC 14.2 and below
Problem
Remote installation tasks finishes with uninformative errors:
Setup process error: Unknown error. (126)
Setup process error: Unknown error. (2)
Solution
1. Create 3rd party installation package (Create installation package -> Create an installation package for the specified executable file.)
2. Specify executable file, for example script.sh
3. Locate this package folder in KSC storage, by default %ProgramD
Problem
Sometimes Anti-Cryptor task in KESL won't be able to launch after the OS is started. This may happen because Anti-Cryptor needs all the protected network resources to be up before KESL service is started. In other words, Samba or NFS services should be started before KESL service.
Solution
To resolve this problem you need to make sure that services start in the correct order.
For Systemd systems:
1. Create a file /etc/systemd/system/kesl.service.d/override.conf
Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.
Same info can be found here: https://support.kaspersky.com/16010
Starting from version 11.5, some file versions, registry and file system paths may differ from the release version and refer to the product line version.
Release full build version
Product line version
GUID
1
Product version/Environment
KSWS 10.1/11.X
Windows Server Requirements for the server on which Kaspersky Security for Windows Server is deployed
Description of Error
Run installation of the application or the console with the setup file. Error "Please go to the Control Panel to install and configure system components" pops up and installation doesn't run.
Solution
Unpack the installation file and run the .msi file inside instead of the setup:
Problem
The "Install application remotely" task wizard presents an option to specify an SSH certificate as account credentials, if Linux package is selected for installation.
The wizard does not accept certain certificates and fails to provide informative error messages why this happens.
Examples:
Failed to upload the certificate.
Failed to import the private key of the certificate.
Root cause
KSC 13.2 only accepts PEM certificates, they start with
The Application Control component has a category called Browser extensions. There is a known limitation for it in Chrome.
If an extension runs in an already running Chrome process (many of them run as newly started Chrome processes, especially for extension reasons), it cannot be blocked because it is not a newly started process and the extension itself is not an executable. It requires an .exe file to load. An extension that is already running cannot be blocked by application control (it h
Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.
What is the role of Kaspersky in BitLocker encryption process ?
Basically, KES BitLocker management is a COM object that is registered in the system and changes the BitLocker component settings in accordance to the settings that are specified in the KES policy. Afterwards it stores the recovery data received from BitLocker component on the KSC side. Also, it provides error-reporting and verifies that th
This behavior is expected. We have no control over a system booting in Safe mode, because Safe mode is a special boot mode for OS diagnostics and repair. It is not possible to enable KES booting when Safe mode is running.
However, booting in Safe mode can be disabled using GPOs or the local registry. It can be done by a local administrator. One of the ways to disable Safe Mode is described here.
