Can't login to teams

%3CLINGO-SUB%20id%3D%22lingo-sub-2272944%22%20slang%3D%22en-US%22%3ECan't%20login%20to%20teams%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2272944%22%20slang%3D%22en-US%22%3E%3CP%3EHello%20I%20have%20a%20problem%20and%20I%20can't%20login%20to%20Teams%2C%20because%20I%20have%20to%20verify%20it%20with%20the%20application%20that%20was%20on%20the%20old%20phone%2C%20but%20it%20no%20longer%20works.%3C%2FP%3E%3CP%3EAnd%20I%20can't%20give%20the%20code%20from%20something%20that%20is%20broken.%3C%2FP%3E%3CP%3EWhat%20should%20I%20do%3F%3C%2FP%3E%3CP%3EIt's%20urgent%20because%20I%20have%20lessons%20tomorrow%20and%20I%20can't%20login.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-2272944%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EAdministrator%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EMicrosoft%20Teams%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E
Occasional Visitor

Hello I have a problem and I can't login to Teams, because I have to verify it with the application that was on the old phone, but it no longer works.

And I can't give the code from something that is broken.

What should I do?

It's urgent because I have lessons tomorrow and I can't login.

2 Replies
Assuming that you cannot access Microsoft Authenticator, your administrator should be able to reset MFA on your account and have you step through the setup process again.
If issue persists in web client, such situation may indicate that your current phone number has been used to register Office 365 service for many times. Another possible reason is that you are under in an unsafe network environment. It is recommended to change another phone number to retry and at the same time be in a more reliable network environment.