Cor den Boer 4/23/2025

New Windows update brakes cloud Kerberos Trust

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Microsoft's April 2025 security update for CVE-2025-26647 inadvertently breaks Kerberos authentication for cloud trusts, causing Windows Hello for Business clients to fail authenticating to on-premises file servers. The article details impacted Windows Server and client versions, how to verify the issue via Event ID 45, and provides temporary workarounds, including a registry key fix for domain controllers.

New Windows update brakes cloud Kerberos Trust

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