Maximum number of authenticator app used for a single O365 account

Brass Contributor



Is there any documentation where it states the maximum number of devices where we can setup authenticator app for for a single user?


For example, I want to set up Microsoft Authenticator app for a single user on 20 different devices. Is there any limit? Thank you!

2 Replies

Hi Raize,

Looks like that you want to use a shared account with MFA with 20 or more different users ;)

I have tried this my self but adding a security key doesn't seem to have a limit. I stop at 7 :)

Hoops this helps !