Acrobat Pro DC v. 2021.00520058

Context: PDF review hosted on a Microsoft SharePoint server with Single Sign-On (SSO)

I am unable to connect to the server, check for new comments, send/publish my comments.

In View > Tracker > Reviews > Joined, I'm am given "Error: Could not get new comments. Login credentials are expired or invalid; please re-enter your sign-in for access."

There is no way to do this.

Sometimes it says "Error: Could not get new comments. Adobe Acrobat cannot access the network. Please verify your computer's network connection and try again."

There is no problem with my connection. I can ping the server.