#Authenticator

2 guides

How to Fix MFA Not Working in Microsoft 365

Fix multi-factor authentication problems in Microsoft 365: re-register security info, check Conditional Access and per-user MFA, time sync, number matching, and app passwords.

MCSA Guru Team Oct 21, 2026 9 min read

Microsoft 365 & Exchange

How to Enable MFA for Microsoft 365 Users

Turn on multi-factor authentication in Microsoft 365: when to use security defaults, Conditional Access, or per-user MFA, plus authenticator setup, rollout, and break-glass accounts.

MCSA Guru Team Jul 16, 2026 7 min read