Free Multi-factor Authentication (MFA) In Office 365

Protect your Office 365 admin account credentials (and any users) with the free Azure multi-factor authentication option included in your subscription. Second factors include the Azure Authenticator mobile app, SMS or phone call to a pre-assigned mobile, or App passwords for non browser clients (eg Outlook) and device apps that don't support MFA. Users can also trust devices for up to 60 days, for more info, see: https://support.office.com/en-us/article/Set-up-multi-factor-authentication-for-Office-365-users-8f0454b2-f51a-4d9c-bcde-2c48e41621c6?ui=en-US&rs=en-US&ad=US