I guess you mean Security Center.
Here is a post by Tarq57
First thing to check, your system date and time.
Second, does Avast update normally? If not, can you manually update?
Third, try a repair of Avast via control panel>add/remove programs. Select Avast> change or remove, then repair.
Fourth, you may need to reset the Windows security centre. It gets confused sometimes.
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.
Set them to Automatically start. (Default)
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.
Leave the others there.
8. Exit back to your desktop and reboot your computer (you might need to boot twice).
This will rebuild the deleted folder, and the database.
Once restarted, Windows Security Center should show the correct info.
Antivirus, and firewall, should now be recognized.