In admin Commandline:
net stop wuauserv
rd /s /q %windir%\SoftwareDistribution
del %windir%\WindowsUpdate.log
net start wuauserv
wuauclt /detectnow
wuauclt /reportnow
Wait 10 Minutes.
net stop wuauserv
rd /s /q %windir%\SoftwareDistribution
del %windir%\WindowsUpdate.log
net start wuauserv
wuauclt /detectnow
wuauclt /reportnow
Wait 10 Minutes.