Just upgraded my Windows 10 to 11 (23h2 Build:22631.3880) and ran Software Updater on Norton 360. Program ran updates (and blanked all background program display). When finished it left me only a message box with 2 choices (since a couple of the updates required restart) - "Restart" and "Finish".
I did not want to restart for the Zoom update just then, as I had been working on another task, so I selected "Finish". Updater disappeared leaving me with a totally blank screen which would not let me do anything. I right clicked. Only choices were "maximize" "minimize" and "close". None had any results. Mouse clicking elsewhere had no effects and the task bar had disappeared too, so no luck there either.
Keyboard was still active so I did a <ctl>+<alt>+<del> (yes, that still works some) to get a screen which allowed me to log out of windows. Did a restart from the resulting login screen and things seemed OK.
Not a good thing...
I'm just reporting this for Norton to figure out what happened. Don't need an answer as I now know how to get out of it if it happens again.
Have a better one, Jim