Microsoft (O365) MFA not prompting

Dirk Diggler · 30 Apr 2021 at 08:33

I've got a business account with O365 and have MFA setup however I can login from any browser with just my password; the only time it prompts for MFA is when I enter the admin/security area.

Am I missing a setting somewhere?

Glanza · 30 Apr 2021 at 13:16

It won't prompt you every time you access something on a device that it's already seen and authenticated. You'll get prompted on any new device or a device you haven't used for several weeks / months.

Dirk Diggler · 30 Apr 2021 at 13:27

Glanza said:
It won't prompt you every time you access something on a device that it's already seen and authenticated. You'll get prompted on any new device or a device you haven't used for several weeks / months.

It's not prompting at any time e.g. if I sign in on a new device then all it needs is email & password.

Glanza · 30 Apr 2021 at 13:34

Dirk Diggler said:
It's not prompting at any time e.g. if I sign in on a new device then all it needs is email & password.

Log into admin.microsoft.com and click on users on the left then active users, at the top you should see multi-factor auth, click that and see what your status is there, your account should have enabled or enforced if it's active.

Dirk Diggler · 30 Apr 2021 at 13:40

That fixed it, thanks very much.

Django x2 · 4 May 2021 at 23:45

Glanza said:
It won't prompt you every time you access something on a device that it's already seen and authenticated. You'll get prompted on any new device or a device you haven't used for several weeks / months.

Yeah that's not true. MFA on a pc will prompt you every time if a session closes and can even ask to re authenticate you after a certain time based on tenant settings.