office 365 external users and multifactor authentication

[Deleted]

Today we had a small talk about Multifactor authentication if you share a link with a external.

So in SharePoint, Onedrive, groups etc you can share your items with externals if enabled. but what happens if my organisation want to have multi factor authentication for all users incl the exertnals.

How can we arrange this as i have no option available in Azure on the external users.

thanks in advance.

in cc @Roel Baan

[#2 · Accepted solution]

They recently released this for B2B: https://docs.microsoft.com/en-us/azure/active-directory/active-directory-b2b-mfa-instructions

And you also have it for B2C: https://docs.microsoft.com/en-us/azure/active-directory-b2c/active-directory-b2c-reference-mfa