A critical DNS misconfiguration in Microsoft Entra ID (formerly Azure Active Directory) disrupted authentication services globally for nearly 90 minutes on February 25, 2025, affecting organizations relying on Seamless Single Sign-On (SSO) and Microsoft Entra Connect Sync. The outage stemmed from an IPv6 infrastructure cleanup operation that inadvertently removed essential CNAME records for the autologon.microsoftazuread.sso.com […]
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