In our lab, we had a few machines with different Windows Update problems.

Some PCs don’t accept anything from our WSUS server, some others seem to have other problems that prevent Windows Update from working.

I ran the system and MS troubleshooters, but the problems weren’t solved.

In all cases, the OSes seem to be healthy.

Solution

I had a long investigation phase, but I didn’t find anything effective until I found the following page on MS Technet:

https://gallery.technet.microsoft.com/scriptcenter/Reset-Windows-Update-Agent-d824badc

… also available from these links:

• https://www.majorgeeks.com/files/details/reset_windows_update_agent.html
• this site

I downloaded the script, and I fixed WU problems by following the steps below:

• open an administrative ‘Command Prompt’
• run the script
• accept user license
• select option 2 (and wait some minutes)
• select option 11
• set Windows Update settings (if requested)
• reboot

From this point, all WUs started running fine.