WSUS Server Broken After July 2017 Patch Tuesday

If you happen to be administering WSUS servers that are still running on the old port 80 and not the new 8530 then you might run into this issue.  This month (July 2017) I installed the patch Tuesday patches then rebooted the WSUS server.  The server came back up fine and displayed the console in the MMC snap-in just fine.  However, when checking for updates on machines within the domain that were pointed to it with group policy, they would get a windows update failure error.  Come to find out, it seems the update must have switched them (yes, I had this happen to two separate WSUS servers on two separate domains) back to the port 8530 using the following:


1.) open Administrative command prompt
2.) cd "C:\Program Files\Update Services\Tools\"
3.) wsusutil UseCustomWebsite true 
     ***should show port 8530
4.) wsusutil UseCustomWebsite false 
     ***should now show port 80

Test connection and you should be good to go.

Hope this helps and saves someone more time then I spent trying to figure it out!