Forum Discussion
Multi factor authentication
Can you force multi-factor authentication for external users in Office 365 Groups?
For external users with a live ID the user would have to enable multi-factor authentication individual for themselves at https://account.live.com/proofs/Manage. You cannot enforce it.
External Office365 users need to set it up in there own Tenant. You cannor enforce this either.
You could use a parent child construction on the live id. Have the child been set up to use 2FA and hand it over to the extenal party. It is a bit far fetched but it will do the trick :)
