Usually this problem with Windows Security Center works itself out after several restarts and the system gets to recognize Kaspersky. The problem is even though there are false warnings, especially soon after installing KIS, sometimes the WSC warnings are accurate.
Whatever the case it's a good idea to get in the habit of being sure to notice that the "K" icon in the taskbar is red. It is also a good idea to open KIS and make sure the bar on top is GREEN and says "Your Computer Is Protected".
If you wish to force the issue :
- In: Start >Run > type: services.msc to display all services
- Click on on Windows Management Instrumentation
- Click on the Stop icon (black rectangle) to stop the Windows Management Instrumentation service.
- Rename the
C:\windows\system32\wbem\repository folder, wait for it to be recreated (can take a bit of time).
- Restart the WMI service & restart the computer.
If something goes wrong, you can always rename back the folder.
The wbem folder is where Windows stores the information it sends to the Security Center about the antivirus and firewall installed. Sometimes, the information there gets corrupted, which results in erroneous information being sent, which is when you are told you don't have an antivirus or a firewall.
If you know you do, it's the communication that is at fault, not the applications per se. By following the instructions above, and removing that folder, you force Windows to check the security applications installed all over again and reset itself. When folder is recreated, the correct information should be displayed after a reboot.
This should solve the problem, and in most cases it does, but sometimes the error is something else. You don't harm anything by giving it a go.
This happens with all anitiviruses and firewalls now and then, under certain conditions - it's not specific to Kaspersky.