For around two months I've had this issue but never posted because I thought it would be patched away soon enough. My process every few weeks is download the latest version of WSUS and copy the entire directory to my USB's.
SanDisk Extreme PRO CZ88 128GB & SanDisk Extreme CZ80 64GB for reference purposes. Also I clear the directory every time there is a WSUS update so nothing conflicts.
I was using WSUS for many months before this started happening.
I select all applicable updates and turn on Automatic Reboot and Recall.
After the first or second restart the WSUS system continues to search for updates forever. (Left overnight and then some)
I did some searching online and found two updates that resolved my problem. I think the updates are there but are out of order.
Windows6.1-KB3102810-x64 & Windows6.1-KB3083324-x64 (In that order.)
I'm not sure if anyone else has have had this problem. Sadly I haven't had the time to check. (Sorry)
My target operating system is en_windows_7_professional_with_sp1_x64_dvd_u_676939 - Windows 7 Professional x64.
My creation operating system is Windows 10 Pro x64 w/ Anniversary Update. I'm not sure if it started after updating to Windows 10 but that would make me so mad. lol
Problem started around September-October 2016.
I'm currently using WSUS Version 10.8.1.
Thanks for all the work on this amazing software.
Also I hope this is the correct location to post this type bug report. (noob)