All of a sudden today by SES both 5.70 (Nordic edition) and 7.20 hang on starting on win10. I use day2day 5.70 at this point and I've used this on many projects and have some open projects I'm working on. Today when I came into it, it started up normally with the dashboard page waiting to open a project on my list of projects. I have menu bars and all that but when I click on a project (or attempt to use the file->open project) it just hangs and does nothing. No CPU usage. can't click on anything past that and have to kill it with task manager.

I looked up an old post [SOLVED] Opening file causes crash on Win10 to see if it helps. When I do what it suggests here, it hangs completely when it comes up -- no menus, nothing...

Anything I can look at to see what it's troubled about?

After hours of trying all kinds of things, I rebooted my system and now this runs great as usual.

Who knows what that's about, but reinforcing the mantra to reboot and then worry.