Why did my untiy stop working?

I can’t get unity to open? I have looked it up and tried the DEP fix but it didn’t help. Before that I changed nothing. I went to go from one project to another and now it just shows the splash screen then closes.

Mine did that too - just reinstall. Its the quickest way.

  1. Back up your projects by copy-pasting the files somewhere else.
  2. Uninstall Unity.
  3. Reinstall Unity.
  4. ???
  5. Profit.

I figured out the problem without having to reinstall. A guy i was working with did some clean up and deleted some wrong files and unity didn’t like it. And every time i tried to open unity it opens the last project I was in or tried to load. So i deleted it and loaded a different project and the problem was solved. Thanks though for the responses.