Microsoft announced on September 21, 2026, that it will retire SMS first-factor sign-in for Microsoft Entra ID workforce tenants worldwide on February 1, 2027, requiring organizations to migrate users to phishing-resistant authentication methods like passkeys. The deadline gives administrators several months to complete the transition.
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Microsoft has reminded admins to migrate Entra ID users to phishing-resistant authentication methods to avoid sign-in disruptions after it retires SMS first-factor sign-in starting in February 2027. [...]
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Microsoft will retire SMS first-factor sign-in for Microsoft Entra ID workforce tenants worldwide on February 1, 2027, requiring organizations to migrate affected users before that date [cybersecuritynews.com#1][bleepingcomputer.com#1]. The change will block sign-ins that use a registered phone number and SMS one-time passcode as the primary authentication method. Existing configurations will no l
Microsoft has reminded administrators to migrate Entra ID users to phishing-resistant methods, such as passkeys, to avoid sign-in disruptions after it retires SMS first-factor sign-in starting in February 2027. https://www. bleepingcomputer.com/news/micr osoft/microsoft-reminds-admins-to-migrate-entra-id-users-to-passkeys/