First Try This:
Start Command Prompt as administrator.
Enter the following commands
- net stop wuauserv
- net stop cryptSvc
- net stop bits
- net stop msiserver
- ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
- ren C:\Windows\System32\catroot2 Catroot2.old
- net start wuauserv
- net start cryptSvc
- net start bits
- net