Shared TEAMs Docs - Desktop App Opening Issue

All of our documents are saved in TEAMS for sharing and multi-editing access. When I open the document, I can only view and edit in the TEAMS app or Web Browser - Which each have limited editing capabilities. When I click "Open in Desktop App" I am then prompted to input my Microsoft 365 Password. When I put in my password, it is accepted/correct, but nothing happens and I am bumped straight back to the TEAMS app or Web Browser version. When I click "Try To Reload and Open in PPT" it just prompts me to reenter my password and still does nothing.

I have tried all of the following: 

• Deleting and Re-Installing the TEAMS app 
• Logging out of Microsoft 365 Online and re-logging in
• Restarting my computer 
• Accessing the files from my Desktop App directly (PPT, Word, etc.) in the "Recently Accessed Files" and trying to open but have the same issue as detailed above. 

I have tried chatting multiple support team members at Microsoft and TEAMs support, but nobody seems to be able to help. Any help here would be greatly appreciated!