Microsoft says it has been enforcing multifactor authentication (MFA) for Azure Portal sign-ins across all tenants since March 2025.

The company’s Azure MFA enforcement efforts were announced in May 2024 when Redmond began implementing mandatory MFA for all users signing into Azure to administer resources.

One year ago, in August 2024, Microsoft also warned Entra global admins to enable MFA for their tenants by October 15, 2024, to ensure users don’t lose access to admin portals.