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Microsoft Authenticator on /e/os
(slrpnk.net)
A community about the /e/ Operating System developed by e Foundation.
/e/OS is a degoogled version of Android. It aims to be a good balance between privacy and usability. Forked from Lineage OS.
If you need to type in a 6-digit-code, any TOTP app should work. Personally, I'm using Aegis Authenticator.
That's not an option for enterprise systems. OP specifically needs Microsoft Authenticator.
It is an option for the 2fA provider that my workplace uses. They do also tell us to use Microsoft Authenticator, but as far as I can tell, just because it was easier to describe than "any app that implements TOTP".