Cannot login to my Microssoft 365 tenant any more

Thijs van der Klei 1 Reputation point
2022-08-08T16:58:06.587+00:00

Hi there,

I wanted to activate MFA for my Microsoft 365 tenant with SharePoint. In Microsoft 365 in the Active Users list, I selected my account. I'm the global administrator for this environment. I enabled MFA for my account. I hoped to get a QR code to be used in de Authenticator app, but I didn't.

Now if I want to log in I either have to approve the login request in the Authenticator app or I have to use a verificationcode, in the Authenticator app as well. The Authenicator app does not give me the possibility to approve the request nor provides a verification code.

How can I deactivate MFA without logging in. Can Microsoft Support help my with this catch-22 situation? Now I am not able to access my Microsoft 365 tenant.

Microsoft Authenticator
Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation.
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Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. Ollie IT Man 171 Reputation points
    2022-08-08T17:10:10.757+00:00

    Hi @Thijs van der Klei

    Hopefully I can help here.

    Are you the only Global Admin on the tenant? If not, you can get them to disable it for you.

    As part of the MFA setup, you should have been able to set up backup authentication methods on the account - e.g. additional email or text message (mobile number).

    If none of those have been set, you'll need to contact Microsoft support. They will be able to verify who you are by billing information and remove MFA for you. If you are going through a Microsoft CSP (Cloud Service Providers), they should be able to help you with this too.

    Contact numbers for Microsoft Support are:

    United States, call 1 800 865 9408.
    Australia, call 1 800 197 503.
    Canada, call 1 800 865 9408.
    United Kingdom, call 0800 032 6417.