Trouble Registering on Teams: Error Fix Needed

I'm having trouble logging into Microsoft Teams. Despite being signed in, I get a pop-up message saying I need to sign in to schedule a meeting. I tried signing out, closing the app, and signing back in, but it didn't work.

Instead, I got an error message saying "Something went wrong. [1200]" with the following details:

Troubleshooting details:

Correlation Id: 62c52bfb-72be-4c4f-8409-a00fca03b05b

Timestamp: 2024-06-23T11:13:20.000Z

DPTI: foa7cdef68d164b716606b0697837e764a05ce43612862e36f4091406e8544f7

Error Tag: 657rx

Error Code: 2148073494

I've checked my network connection multiple times, but it still doesn't work.

Please help me as soon as possible I need to use Teams for studying tomorrow.