http://forum.avast.com/index.php?topic=23457.msg193534#msg193534http://windowsxp.mvps.org/repairwmi.htmIf you are running Windows XP, Service Pack 2 you can use a single command to detect and repair a corrupted WMI Repository. To do so, type the following from the command prompt (note that the parameter UpgradeRepository is case-sensitive and must be typed exactly as shown):
rundll32 wbemupgd, UpgradeRepositoryAfter running UpgradeRepository you can verify the results by looking ay the Setup log. If inconsistencies are detected and if the operating system was able to rebuild the Repository you should see information in WMI Setup log (%windir%\System32\Wbem\Logs\Setup.log)
Sometimes, Windows Security Center stop recognizing your antivirus or firewall... The fix could be fairly easy for the most part.
1. Go to control panel and open Administrative tools.
2. Click on services.
3. Go down to Windows Management Instrumentation.
4. Stop this service. Stop Security Center service too.
Let them to Automatically start.
5. Exit out of this area to your desktop.
6. Right click Start and choose Explore.
7. Go to c:\windows\system32\wbem\repository.
Delete this subdirectory
ONLY. Let the others there.
Sometimes, only using
Unlocker,
MoveOnBoot or
Delete FXP you can delete these files.
8. Exit back to your desktop and reboot your computer (maybe you need to boot twice).
This will rebuild the deleted folder and the database. Once restarted, Windows Security Center should show the correct info and antivirus and firewall should now be recoginized
Other answers for XP Security Center not detecting antivirus or firewall program could be found here:
http://support.microsoft.com/kb/883792.
Also:
Might have to install AVG from Grisoft temp just to Fix this mess.
It won't solve... the second antivirus will conflict with avast...