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Can I refuse MS Authenticator? (lemmy.ml)

submitted 5 months ago by [email protected] to c/[email protected]

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So my company decided to migrate office suite and email etc to Microsoft365. Whatever. But for 2FA login they decided to disable the option to choose "any authenticator" and force Microsoft Authenticator on the (private) phones of both employees and volunteers. Is there any valid reason why they would do this, like it's demonstrably safer? Or is this a battle I can pick to shield myself a little from MS?

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[–] [email protected] 1 points 5 months ago

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.