Bleepingcomputer

Microsoft Mandates MFA for Microsoft 365 Admin Center Access

First seen 8 Jan 2026, 16:50 UTC • •39.7

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ThreatCluster •March 12, 2026 at 13:27 UTC

Microsoft is enforcing multi-factor authentication (MFA) for all users accessing the Microsoft 365 admin center, effective February 9, 2026. This policy follows a gradual rollout that began in February 2025, and organizations must enable MFA to prevent access disruptions. Users without MFA will be blocked from signing in after the enforcement date.

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5 entities, 4 inferred relationships (STIX 2.1).

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Technique (5)

Brute Force
Credential Stuffing
Malware
Password Reuse
Phishing

Relationships

Brute Force related to Credential Stuffing
Brute Force related to Malware
Brute Force related to Password Reuse
Brute Force related to Phishing

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