Windows 10: Can't open Settings (Windows Update)

Didn't work.When I added an user account I was unable to open even start menu.

 

I resolved this problem by removing and then reinstalling the most recent cumulative update for windows 10. It turns out that most of these updates by MS have a disclaimer that says:

https://support.microsoft.com/en-us/kb/3176493

As soon as I uninstalled the that update my search began to work correctly again, then I just let Windows reinstall the update and all was good.

 

So I had exactly this problem, open settings, go to update and security, screen would flash up then disappear.
I had been just going through the services and disabling things I thought wasn't needed, so I knew it had to be something I did. So went back and re enabled and found that the problem was the Update Orchestrator Service for Windows Update. This needed to not be disabled, strange thing is that it doesn't get started, but the service needs to not be disabled. Everything works now, kind of sucks because the info about this service led me to believe that it was needed only for administration people doing updates via the network, Anyway got it wrong and this should fix the problem for any other people that have this issue.

 

Log off Windows (not restart) and then sign back in. You should have access restored to the Settings panel.
Note that this does not fix the problem - it seems to re-occur spasmodically after reboot, but logging off/in will get it back.