I had a terrible problem, one day just stopped starting Illustrator, I decided to update to the latest version, began to appear an error and an offer to either start diagnostics or run the program itself, once after choosing the second option, it grinds to start, I reset, closed, and then either just a line in the task manager, or randomly opens the diagnostic offer (when you select it all just hangs)
I tried reinstalling, through folders cleaned the settings through adobe creative cloud cleaner - well, already tried everything.
Help