Microsoft Authenticator account deleted by mistake

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I accidentially removed my account in Microsoft Authenticator app which I was getting "Sign In Request" for Microsoft Teams and Outlook for my organization. I changed my mobile device and when I try to access Microsot Teams in the new device, approve request is sent to old device which is giving this error : "The notification is for an account that is no longer available. You may need to add the account again." The problem is I am not able to add the account again. Moreover, if I try to add that account in the new device, the approval request is sent again to the old device.

Any idea would be welcome to solve this issue..

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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  1. Dave Patrick 426.2K Reputation points MVP

    Sounds like you'll need help from your organization admins to set it up again.

    --please don't forget to Accept as answer if the reply is helpful--

    1 person found this answer helpful.

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  1. Derrick Chai 1 Reputation point

    What if the ONLY admin account was accidentally deleted in Microsoft Authenticator App, and don't have any backup?