WinXP SP3 Breaks Automatic Updates

Windows XP Service Pack 3 can break the automatic updates under certain circumstances due to a DLL that may not be registered. If the update system starts to fail with messages like “updates not installed”, do the following:

  1. Stop the update service:
    net stop wuauserv
  2. Register the DLL:
    regsvr32 %windir%\system32\wups2.dll
  3. Restart the update service:
    net start wuauserv

The update service should work again.

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