Microsoft previously told Windows Latest that it added jailbreak or root detection (iOS/Android) for work or school accounts ...
To enable the passwordless feature for your Microsoft account, you first have to add the Microsoft Authenticator app. After that, you will be able to enable the passwordless mode for your account.
Microsoft Authenticator is cracking down on rooted Android and jailbroken iPhones, blocking work and school Entra sign-ins on modified devices.