Errors in Kaspersky Endpoint Security for Windows occurring after the installation of Windows updates

Issue

Windows updates listed in the table below may interfere with the operation of Kaspersky Endpoint Security for Windows.

After the installation of a Windows update, Kaspersky Endpoint Security for Windows keeps functioning correctly, and the security of the system remains intact, but installation of a minor update for Kaspersky Endpoint Security for Windows (for example, upgrading from version 12.1 to 12.2) becomes unavailable.

We recommend installing the fix released by Microsoft as soon as possible. Find a fix for your Windows version in the table below.

Operating system	Update	Update with fix (November 2021)	Update with fix (December 2021)
Windows 7	KB5007233, KB5007236	—	KB5008244
Windows 8.1	KB5007247, KB5007255	—	KB5008263
Windows 10 version 2004 (20H1) and later	KB5007186	KB5007253	KB5008212
Windows 10 version 1909 (19H2)	KB5007189	—	KB5008206
Windows 10 version 1809 (RS5)	KB5007206	KB5007266	KB5008218
Windows 10 version 1607 (RS1)	KB5007192	—	KB5008207
Windows 10 version 1507 (TH1)	KB5007207	—	KB5008230
Windows 11	KB5007215	KB5007262	KB5008215
Windows Server 2008	KB5007246, KB5007263	—	KB5008274
Windows Server 2008 R2	KB5007233, KB5007236	—	KB5008244
Windows Server 2012	KB5007245, KB5007260	—	KB5008277
Windows Server 2012 R2	KB5007247, KB5007255	—	KB5008263
Windows Server 2016	KB5007192	—	KB5008207
Windows Server 2019	KB5007206	KB5007266	KB5008218
Windows Server 2022	KB5007205	KB5007254	KB5008223

For more information, see the Microsoft support website:

• Windows 10
• Windows 11
• Windows Server

Solution

If Kaspersky Endpoint Security for Windows does not start after the operating system upgrade (for example, from 22H1 to 22H2):

1. Download kes_setup_util.
2. Run cmd.exe with the administrator rights and execute the command:

   kes_setup_util.exe /unblock

3. Wait until the tool completes its work.
4. Restart the computer or force run the AVP service using the command:

   _{sc start avp}

5. If Kaspersky Endpoint Security for Windows still does not start, proceed to the solution below.

If Kaspersky Endpoint Security for Windows fails to start after the installation of the Windows updates from the table above:

1. Install a fix from the table above, if available. If the fix for your Windows version has not been released yet, delete the Windows update that causes the issue.
2. Restart your computer.
3. Uninstall Kaspersky Endpoint Security for Windows. If the application cannot be removed in a regular way:
   1. Download kes_setup_util.
   2. Run cmd.exe with the administrator rights and execute the command:

      kes_setup_util.exe /unblock

   3. Try uninstalling Kaspersky Endpoint Security for Windows once again. If the issue persists, use the kavremover tool.
4. Install Kaspersky Endpoint Security for Windows once again.

If an error occurs at the installation of a minor update for Kaspersky Endpoint Security for Windows, for example, version 12.2:

1. Install a fix from the table above, if available. If the fix for your Windows version has not been released yet, delete the Windows update that causes the issue.
2. Restart your computer.
3. Run a database update in Kaspersky Endpoint Security for Windows.
4. Try installing the new version of Kaspersky Endpoint Security for Windows again.

What to do if the issue persists

If the issue persists, collect diagnostic data and submit a request to Kaspersky Technical Support via Kaspersky CompanyAccount.