You may be a victim of software counterfeiting 'Fix the error'

1, launch Windows Task Manager.
2. Locate the process “wgatray.exe” and end it.
3. Log in into the Safe Mode and delete the file WgaTray.exe from c:\Windows\System32
4. Also delete the WgaTray.exe from c:\Windows\System32\dllcache
5. Type regedit in Run to open Registry Editor, navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify key.
7. Delete the folder WgaLogon and all of its contents.
8. Restart the PC normally.