Strange windows update errors.
I’ve run across this a couple times now so I figured I’d write something about it so the fix would linger in my head next time. After installing windows on an Acer laptop from the set of restore CDs I would immediately go to windows update and get current. After a reboot or two I would get this error.
Files required to use Windows Update are no longer registered or installed on your computer. To continue:
Click option 1: Register or reinstall the files for me now (Recommended)
Click option 2: Let me read about more steps that might be required to solve the problem.”
If I clicked on option 1 it would just cycle back through windows update and fail again. No change at all. I even tried doing a custom update but that didn’t make any difference either. Option 2 just drops you to a microsoft help search page. It doesn’t make any attempt to point you in the right direction. I don’t even remember seeing an error code to go with this.
Either way, I ran into a site that had the fix. All you have to do is re-register some DLL files in windows. I’m not 100% sure you even have to register all of the ones listed. I, for some reason, believe it stems from the msxml3.dll, although I have nothing to back that up.
click Start->Run (or optionally hold the windows key down and tap the letter R) and, one at a time, run each of the following commands to re-register the DLL files. This worked for me.
regsvr32 wuapi.dll
regsvr32 wups.dll
regsvr32 wuaueng.dll
regsvr32 wucltui.dll
regsvr32 atl.dll
regsvr32 msxml3.dll
That has done the trick for me every time but failing that, another individual found that downloading and re-installing the windows update agent fixxed it. You can download that here: http://go.microsoft.com/fwlink/?LinkId=43264
If windows is not letting you install the update agent becuase it’s already installed. Open the run screen again and run this.
WindowsUpdateAgent20-x86.exe /wuforce
I’ve never had to take it that far so I’m not sure if that actualy helps or not. I still don’t know why it happens. The only thing I did after freshly installing XP from restore CD’s was hit up windows update.