Single global admin - tenant owner - locked out from new MS Authenticator App install

BSmith 0

Hello,
I have a client who has only one account set as the global admin/owner. They are using MS 365 Standard and MS Entra ID Free. They replaced their phone and now have a different MS Authenticator but it doesn't work without re-registering it in MS Entra, so we can't use it to authenticate to get into MS Entra a reset the account. How can this be fixed?

Rukmini 35,485 Reputation points Microsoft External Staff Moderator

2026-04-01T19:27:34.11+00:00

Hello BSmith

Please share the details over the private messages so that we can assist you further.
Rukmini 35,485 Reputation points Microsoft External Staff Moderator

2026-04-08T01:55:30.6466667+00:00

Hello BSmith

Please share the details over the private messages so that we can assist you further.

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Single global admin - tenant owner - locked out from new MS Authenticator App install

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