How to switch directory for AADB2C when Authenticator App not working

Question

I recently got a new iPhone and when I tried to restore my Microsoft Authenticator App from my backup, several of my accounts said "Action Required" and wanted me to re-scan the QR codes. This was easy for my personal and work accounts. However, I have a separate tenant tied to my Azure work account that we are using for AAD-B2C and when I try to switch directories, it asks me to re-authenticate but it will not accept my work email codes from the authentication app. When I enabled 2FA on the separate tenant, I had to create a separate Authenticator account specific to the new tenant domain name. However, I do not know how to re-create this account in the Authenticator app so I can't log into my other tenant. Has anyone else run into this problem? How can I get around this?

Answer 1

Yes, I have too, the solution I came up with was to merge all the tenants (eventually) make a "break glass" emergency global admin of all the things and don't assign any resources., then if this happens you can get out...

You should be able to make a new account and b2b a new 'break glass' user...