On February 9, 2013 Kaspersky Lab announced the release of Patch C for Kaspersky Endpoint Security 8 for Windows (version 8.1.0.831).
Patch C is not cumulative and doesn't cover fixes that are included in patches A and B.
Issues fixed
Patch C fixed the issue when, after successful patch B installation, the Administration Console of Kaspersky Security Center 9 showed the "Protection Is Off" status for the affected client computer, once an active user logged off.
The client computer was not protected until any user logged in to the operating system, which started SRV and GUI processes.
Installing Patch C
Using Kaspersky Endpoint Security 8 for Windows
To install Patch C automatically:
- Open the Settings tab in the main application window.
- Go to Scheduled tasks > Update in the left part of the window.
- Enable the Update application modules option.

Patch C will be automatically installed on your host during the next update session.
Reboot is required to apply the changes.
Via Kaspersky Security Center 9
To install Patch C automatically:
- Open the Properties of a group task.
- Enable the Update application modules option in both the Update settings for local mode and Update settings for mobile mode sections.

Patch C will be automatically installed on your host during the next update session.
Reboot is required to apply the changes.
How to check if Patch C is installed
Locally
After installing the patch and restarting the computer, the application version changes to 8.1.0.831 (а,b,с).
You can view the full version of the application by clicking Support in the lower part of the main application window.
The following files change their versions in the installation folder:
- avpgui.ppl (8.1.0.901)
- avp.exe (8.1.0.901)
Via Kaspersky Security Center 9
To view the full version of the application, open the Administration Console and do the following:
- Go to the Reports and notifications node.
- Open the Kaspersky Lab software version report properties.
- Add the Updates installed field in the Detail fields section.
- Click ОК to save the changes.
- Generate the report.
The Updates installed field will show Patch C.