As a signed-out Microsoft 365 admin who set 2-factor authentication and cannot use my phone anymore

Question

Hi, this is my situation.

1. I am the only administrator for my company.
2. I set up 2-factor authentication for my account using Microsoft authenticator, and unfortunately, I didn't select the SMS as an alternative option.
3. I broke my phone yesterday and cannot recover the data or app stored locally on my phone.
4. I accidentally sign out from my account.
5. Now I am stuck at the sign-in windows that ask me to enter the code from the authenticator app only

FYI:

• The document tells me to report to admin (technically, it's me)
• • The document describes me to contact the helpdesk (technically, it's me again)
• I can reset my account's password by setting up my recovered email account. But even I reset my account password. The sign-in window still asks for the code from the authentication app.
• I also can access a few accounts belonging to my company's domain. But these accounts have no administrator role.
• • Our company has no more than 30 employees, so I think I cannot go on a fast track.

Please tell me how to solve this problem and make I access my Microsoft account again

Answer 1

Hi ,

Try to Install the MFA App on New Phone , and get the Code or

Open an Support ticket via Phone call,

https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2

Always , Create a backup account of Global Admin access with no MFA. Prevent this kind a Issues.