Windows Genuine Validation for Corporate
In Corporate environment, when by mistake you install the WGA Validation update of late, you will be nagged about activating your Windows.
A solution I’ve found for this from the comments in this web site, suggested the following:
%windir%system32wgatray.exe /u
Remove the following Registry tree: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogonNotifyWgaLogon
After reboot, you will not get the nagging popup anymore, and somewhat later will be asked to (re)install the WGA Validation update.