Scenario: You use Microsoft Authenticator to access your Microsoft 365 account. You have changed your smartphone and you need to re-initialize the Authenticator on the new smartphone.
The procedure must be performed by the Tenant administrator.
Enter portal.office.com of the Tenant with administrative role.
Microsoft Entra
In the “Microsoft 365 Administration Center” on the left click on “Identity” (If you do not see it click on “Show All”).
At this point you will be projected into the “Microsoft Sign In Administration Center”.
On the left select “Users”.
On the right, search for the user and select it. On the user page, on the left, select “Authentication Methods”
On the new page, at the top right, there is a button “re-enroll multi-factor authentication”.
Azure Portal
Microsoft Entra user management can also be reached from the Azure portal by selecting “Microsoft Entra ID”. Then select “Users” and continue with the previous procedure.
