Go to www.microsoft.com/genuine and revalidate. Reboot your computer after this is done. Let us know us if this fixes the issue. Sometimes revalidating and rebooting correctly syncs the Windows library files.
If not try this:
Please click start, then run, then type in "wgatray.exe /b" then press enter. After that, log off and log back on.
If the above does not fix the problem:
Locate the file: C:\ Documents and Settings\All Users\Application Data\Windows Genuine Advantage\data\data.dat and delete it. Reboot, send your browser to http://www.microsoft.com/genuine/ and click "Validate Windows".
If still no resolution, then:
Please follow this simple troubleshooting procedure:
1. Download and install the MGA Diagnostic Tool: http://go.microsoft.com/fwlink/?linkid=56062
2. After running the WGA Diagnostic Tool, click on the "Validation" tab and then click on "Copy to Clipboard".
3. Next, visit the following website and create a post in the "WGA Validation Problems" forum and paste the results of the WGA Diagnostic Data in a detailed post. http://forums.microsoft.com/Genuine/default.aspx?SiteID=25
4. A WGA troubleshooting specialist will analyze the data and recommend an appropriate solution.