teams validation failed

Question

I received this error 50089. The result was that I couldn't verify myself into my PR team's account. It worked fine, then suddenly it wouldn't call my phone, I tried changing the verification system, but it didn't work. Is there anyone who can help me? Or give me a temporary solution to the problem? This is really urgent!

Answer 1

Dear 365VIP4

Good day! Thank you for posting in the Microsoft Community. We are happy to help you!

According to your description, please kindly follow instructions in this article to see if any method in it can solve the error: Resolve sign-in errors in Teams.

If you’re on Windows device, please also kindly refer to following steps to check wehther it can help you

1. Close Teams, clear Teams caches and then open Windows Credential Manager.
2. Find the credentials related to your Office account. Back up them and remove credentials.
3. Start Teams.

Meanwhile, if your problem persists, to better help you I still need to colloect more information to narrow down the scope of question

• Has your Teams client been updated to the latest version? If not, please check the results after the update, thank you.
• Please try signing in to Teams web with your account and check if you get the same error, thank you.
• It seems that you received some error messages and error codes, if it is so convenient, please share a complete screenshot with your error message and error code to me, thank you.
• Do you use MFA and in what context does this error occur? Did you get this error when using MFA to verify your account?

Please kindly trust me to do more research and testing when I receive the above information feedback, thank you.

Thank you in advance for your understanding! Your patience and cooperation will be greatly appreciated. I hope all the best!

Sincerely

Kerry Chen | Microsoft Community Moderator

Answer 2

Does this issue happen using Teams-certified Android devices or any other device such as a Windows OS device too?