Recap of events. I have 3 PCs, Two Dell Optiplex 760, one Dell Inspiron Laptop.
Updated all three machines on May 5th or thereabouts with 1803 USB Image media tool.
My Dell Optiplex (daily user) had been showing a message in the bottom right corner ""Windows not activated sign into Microsoft Account"
On Tuesday evening I signed into my Local Admin account in an attempt to create a MS account but the servers were down. I attempted to run the MS activation troubleshooter and received a message " You will be unable to personalize your PC, until you sign into a MS Account and activate Windows.
Signed out of my admin acct.and logged into my local user account. This is where it got ulgy, the desktop had huge icons (default I guess) and my wireless mouse was inoperative. Shut PC down restarted and set boot to USB and reinstalled a clean backup (first) image of 1803.
This AM I asked (post 4) where to find if Windows was activated I couldn't remember, thanks to
@Bighorn I found it. Opened Settings > System and the text showed Windows wasn't activated, on the same page clicked on clicked on "Related settings" and Windows 10 activated immediately.
Performed the same as above on my Dell Laptop and it too activated immediately.
It's all way over my head, if we could figure out what Microsoft is up to we would all be NASA Scientist's
MS are good at telling us what's new, it's what they don't tell us causes unnecessary grief, and productivity loss. I believe the glitch is with the Spring Update 1803 it effected 3 PC's.