I have been using Dropbox for Windows 11 on my PC for a couple of years now without problem. Today I find that it won't connect. I can browse to the website and login to my account but the app won't start on my PC. Checking its icon on the taskbar it says it is starting but it never gets anywhere, when I look on its preferences it says it is not connected to an account but I can find no way to connect to one, as I said it's been connecting for years.
Any suggestions on how to fix this will be most welcome.