A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hey there, Lien Chiou
As there are other admins on the tenant, that can reset your authentication method, they must do this. Microsoft won't be able to intervene unless you were the only admin on the tenant. Even then, they will need to verify ownership of the tenant.
As you have other members who are administrators, please ask them to reset your authentication method. They can do this by signing into their account here: https://entra.microsoft.com/
Once they have signed in, they will need to go to your account by clicking onto 'Users' under 'Entra ID'
When they click onto your user account, they will need to click onto 'Authentication methods'
They will then need to click onto 'Require re-register multifactor authentication'
This will require you to re-register your authentication method when you next sign in. Your admin can do this online, and doesn't need to be signed in at work to do this.
Hope this helps,
Nathan