Uninstall WSUS

http://social.technet.microsoft.com/Forums/en-US/f447e7d6-7007-4eb6-b38b-90f92525e092/how-to-uninstall-wsus?forum=winserverwsus

Windows Update Error Codes

Microsoft keep a list of Windows Update error codes here:
http://support.microsoft.com/kb/938205/en-nz

Windows Update 800B0001 Error

If Windows 7 clients are getting the following Windows Update error:

Windows could not search for new updates

An error occurred while checking for new updates for your computer.

Error(s) found:

Code 800B0001 Windows Update  encountered an unknown error.

 

Clients can still get updates from Microsoft Update, but anything from our WSUS does not work.

According to http://myworldofit.net/?p=809

As it turns out Microsoft had updated the Windows Update client on Windows 7 and that an update (the number is KB2720211) was required on the WSUS server to allow the clients to continue to update.

Simple solution is to approve this update in WSUS and apply it to your servers, a bit of a pain is that this update requires a reboot of the server but hey its that or no updates for your clients!

 Thanks MyWorldOfIT

References:

http://myworldofit.net/?p=809

Force Windows to Check for Updates

To force Windows to check for updates type wuauclt /detectnow at a command prompt