====== Windows 7: Repair Windows Updates ======
  - open a DOS-commandline with administrative rights (cmd.exe)
  - execute the following commands\\ <code winbatch>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 start msiserver
pause</code>
  - retry windows update