My computer wouldn't download updates, then when it did, wouldn't install them. From this site I found links to an article that explained why. Basically, I had problems with a message constantly coming up asking to install the 'Status' disk. Trying to cure it, I finally reinstalled XP home again. This didn't work. What did was another link from this site that directed me to download a missing .dll file. http://www.dll-files.com/
Once installed, the message stopped. My installer still wouldn't download. I found out that Microsoft sent out a stealth update last year. Reinstalling Windows XP failed to register some .dll files. To correct this, I clicked on start / run and entered "%windr%\softwaredistribution" without the quotation marks in the command line and hit OK. This took me to the C\WINDOWS\Softwaredistribution folder. I deleted the contents of the DataStore folder. I did not delete the log folder contained inside, just its contents. I rebooted. I went to Start /run again and entered the following commands in the command line one at a time, hitting the OK button after each.
regsvr32 /s wuapi.dll
regsvr32 /s wuaueng1.dll
regsvr32 /s wuaueng.dll
regsvr32 /s wucltui.dll
regsvr32 /s wups2.dll
regsvr32 /s wups.dll
regsvr32 /s wuweb.dll
This registered the .dll files. This is sort of over simplified, but it's easier to understand for someone less computer savy
Here's the link to the Windows Secrets article that explains it a lot better than I ever could. http://www.windowssecrets.com/2007/09/27/0...vents-xp-repair
I would have never found any of this without help from members on this site.