Over the past few months I have problems with my Google Drive. I get these errors:

The server encountered an error. Please try again later
There were some problems loading your apps

And as a result I can't even add any Chrome extensions besides the ones already installed.
I have tried almost every suggested solution without any luck.
I think the best solution might be to reinstall Windows 10 and hope this will be sorted finally.
If anyone can suggest anything that I might have missed, such as you had the same problem and you finally found a solution, I would be most grateful.