OneDrive cannot connect to Server

[Matrix]

When I try to connect OneDrive, it does not connect to the server and I receive the following message:

Cannot Connect to Server. The server may be unavailable. Check your internet connection and try again.

This usually happens when I am trying to access or update Microsoft Office document files.

My internet is working just fine, so how should I fix the issue?

[HappyAndyK]

Delete the Office Upload Center cache files and see if that helps you.

More suggestions here: Fix OneDrive sync problems & issues on Windows 10