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Upgrade to XP then automatic updates fail

I had a problem after upgrading a computer from Windows 2000 to XP Professional. The update worked but automatic updates didn't work after that. They kept failing. There are plenty of "solutions" to automatic updates not work, but this is the one that worked for me. Apparently a similar problem takes place when you do a repair installation. Some necessary dlls are failed to register.

Make and run a bat file with the following:

regsvr32 wuapi.dll
regsvr32 wuaueng.dll
regsvr32 wuaueng1.dll
regsvr32 wucltui.dll
regsvr32 wups.dll
regsvr32 wups2.dll
regsvr32 wuweb.dll

There appears to be an increasing issue with MS that they don't give diagnostic information when errors occur. Are there logs? Who knows.