Klfoc Service Failed To Start On Windows Server 2025 Everytime After Reboot

[Sang]

Hello fellows, we deployed a Kaspersky Security Center Failover Cluster following Kaspersky’s documentation, but we are encountering an issue related to the Klfoc service. The service does not start automatically even though its Startup Type is set to Automatic. We have to start it manually after each server reboot when testing failover.

Reproduction Steps:

Step 1: We turn off KSC-01 Server and failover switches to KSC-02 successfully.

Step 2: After that, we turn on KSC-01, then turn off KSC-02 to test failover again, an error appears during server (KSC-01) startup.

Step 3: We've to manually start the Klfoc service via services.msc, after that, the system returns to normal operation.

I would like to know whether this issue is related to the OS or the Kaspersky service itself.

Environment:

• Kaspersky Security Center: 15.1.0.22239

• Network Agent: 15.1.0.22239

• OS: Windows Server 2025

• Database: MSSQL 2022 / SQL Server 16.0

• Klfoc Service Log On: Local System

• Account running KSC core services: ksc

• Account running services like Web, Proxy,..: rightless