I have a Sony Vaio laptop running Windows 7 Home Premium. I can no longer run automatic updates, it come up with an error message 8024800A Windows Update encountered an unknown error.
I have no been able to run updates for over a month
start cmd (START > RUN > CMD, run as Administrator) and copy and paste the following lines:
REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate" /v SusClientId /f
REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate" /v SusClientIdValidation /f
net stop wuauserv
move %windir%\windowsupdate.log %windir%\windowsupdate.old.log
move %windir%\SoftwareDistribution %windir%\SoftwareDistribution.old
regsvr32 /s atl.dll
regsvr32 /s wucltui.dll
regsvr32 /s wups.dll
regsvr32 /s wuaueng.dll
regsvr32 /s wuapi.dll
regsvr32 /s msxml3.dll
regsvr32 /s mssip32.dll
regsvr32 /s initpki.dll
regsvr32 /s softpub.dll
net start wuauserv
wuauclt /resetauthorization /detectnow
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