I can't add my work account in MS Authenticator App i guess because I accidentally deleted the authenticator app

Question

Someone please help me gain access with authenticator app. I already had access with authenticator app but accidentally uninstalled it. When I tried to add my work account, it requires me to have a code but couldn't create one as I need first to have it added on the app before I can get the code.

Answer 1

You need to disable the MFA on Azure AD account first and then re-enable it for MFA.

https://learn.microsoft.com/en-us/azure/active-directory/authentication/tutorial-enable-azure-mfa

Answer 2

If you are the only global admin on the account and are blocked entirely, you can reach out to the Azure / 365 Data Protection team to restore access. 866-807-5850

Also, for the future, you can create an emergency access account (break glass) in Azure AD. This account will help prevent being accidentally locked out of your Azure Active Directory (Azure AD) organization because you can't sign in for any reason. https://docs.microsoft.com/en-us/azure/active-directory/roles/security-emergency-access

Some other support options include;
AzureSupport
https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
azcommunity@microsoft.com

recovery form https://account.live.com/acsr

or creating a ticket through a different account: https://learn.microsoft.com/en-us/microsoft-365/admin/get-help-support?view=o365-worldwide#phone-support

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