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Can I refuse MS Authenticator?
(lemmy.ml)
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this post was submitted on 30 May 2024
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Is your company mandating Push Authentication or are you entering 6-digit codes?
If it's the former, MS Authenticator is the only option.
If it's the latter, you can use any TOTP app you like, e.g. Aegis.
Afaik, Microsoft’s OTP implementation is proprietary and not TOTP.
But also, my understanding is you can select which MFA schemes you can use, and allow SMS, MS MFA, and TOTP.
Source: employer used to allow sms, locked it down, and totp apps can’t parse the MS authenticator QR codes.
Not true. Work at an MSP that has hundreds of Microsoft accounts in our password managers with TOTP. We even migrated password managers and had no issues with TOTP.
That said, we are moving away from shared admin accounts and we will have delegated access enabled with JIT for better security soon.
Ok. Did a quick read. And I think I mixed my words a little.
Yes, Active Directory supports TOTP fine.
But my understanding is rollouts can disable TOTP, and instead force the use of the proprietary scheme requiring the MS Authenticator app (which also supports TOTP) that uses push notifications to the device.
As is the case with my employer. They didn’t enable TOTP, and I am unable to use the provided MFA QR code with 1Password.
When you start the MFA registration process for a Microsoft account and select the Authenticator as the method there is a link at the bottom of the page about using a different app. Sure it will only generate a rotating code instead of the “easier” method of just entering a 2 digit number when prompted on the phone, but entering 6 numbers isn’t that much more difficult than 2.
Yes, this link has been disabled as per (dumb) organisation policy.
Im using aegis as totp with microsoft at my company right now
It might depend on configuration. In the only case of Microsoft enforced 2FA I know of, it is just TOTP. Microsoft's web interface nudges (tries to trick) you into using the MS Authenticator app, but that app is not needed. You can use any TOTP capable 2FA app, e.g. Aegis or FreeOTP+, both of which are also available through F-Droid and don't require internet connection.