Does other account with the same condition have the problem?
Do you use two-step verification all the time?
What type is your account, like *.hotmail.com or outlook.com?
According to your description, it seems related to the verification.
I test my office 365 account with MFA. It’s no problem. Moreover, you can clear the client cache and have a try.
Cannot log into Teams for Linux
Justin
6
Reputation points
My Teams for Linux app on Ubuntu Budgie 18.04 stopped working today (1/9/2020), as it logged me out unexpectedly, and I cannot log back in.
Receiving the following login error:
"We couldn't find an account with that username."
However, I can log in with the same email and credentials on Teams web/online.
2 answers
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Sharon Zhao-MSFT 25,056 Reputation points Microsoft Vendor
2020-01-10T06:51:43.437+00:00 -
Justin 6 Reputation points
2020-01-10T01:40:25.36+00:00 Strangely, I was able to log in again after turning off two-step verification on the associated Microsoft account.