Adobe Illustrator CC crashing on loading

This is a work PC so i can't perform certain tasks without our Servicing Technician. I did however try everything you suggested except launching the app in safe mode because i can't acces that on my own.

What i did try is this: deleting ~FontCache~ files in FontCache folder. I could not delete them because they were in use. Don't know how because i went to that folder right when i restarted my PC. I could rename them and so i did. After rebooting PC and starting Illustrator from CreativeCloud app the fonts were loading in percentages, and the loading screen crashed on "initialization...".

Reseting preferences for Illustrator manually - still nothing.

I can't create new user but i can log in with coworker's network username that creates a new temporary user on my PC and there the Illustrator was working without any problems.