Mod Edit: Split from https://www.bleepingcomputer.com/forums/t/621990/windows-update-taking-forever - Hamluis.
I just joined to say thank you for the post about KB3172605, I came by the problem in trying to do a repair (reinstall) of Win7 SP1 that had hung for 4 hours before I bailed and used the one-two combo of KB3020369 first, otherwise known as the April 2015 Servicing Stack, then the now-famous KB3172605. (Actually I had KB3020369 already, so needed only the second one, '605.)
After I confirmed KB3020369 then installed KB3172605, rebooted and re-launched the Win7 disc, the "Latest Updates" check literally cycled in one second. 1/60th of a minute.
This makes me suspect that the problems hanging up the regular Windows Update is the same thing hanging when we try to do a repair (upgrade) of the OS. My Windows Update last had worked in mid-October, and realizing that had prompted several days of hassle leading to today's "Repair/Upgrade" and discovering the other hang on "Latest Updates."
Edited by hamluis, 01 December 2016 - 04:47 PM.