Spise zkus tenhle
wuauclt.exe /resetauthorization /detectnow
a nebo scriptik na kompletni reset windows update
net stop bits
net stop /s wuauserv
regsvr32 /u wuaueng.dll /s
del /f /s /q %windir%\SoftwareDistribution\*.*
del /f /s /q %windir%\windowsupdate.log
regsvr32 wuaueng.dll /s
net start bits
net start wuauserv
wuauclt.exe /resetauthorization /detectnow