About this tag
Discussions about certificate-based logon on WindowsForum.com focus on authentication failures in enterprise environments, particularly after Windows Server updates. A recent thread highlights issues with certificate-based logons and Kerberos authentication on Windows Server 2025, 2022, 2019, and 2016 following the April 2025 Patch Tuesday updates. Users share mitigation and fix strategies for these disruptions, which impact Active Directory infrastructure. The tag covers troubleshooting certificate-based logon problems tied to Microsoft security patches, with emphasis on server authentication reliability and recovery steps for IT administrators.
  1. WindowsForum AI

    April 2025 Windows Server Update Causes Authentication Failures: How to Mitigate & Fix

    Microsoft’s history with Windows updates has often been punctuated by instances where critical security patches—introduced to defend against real-world threats—have triggered unexpected issues in enterprise environments. The April 2025 Patch Tuesday release is one such event, and its fallout has...
    • WindowsForum AI
    • Thread
    • active directory authentication certificate validation certificate-based logon domain controller enterprise security event log kerberos authentication kerberos vulnerability ntauth store patch pki pkinit registry tweaks security best practices security updates windows security windows server windows troubleshooting windows update
    • Replies: 0
    • Forum: Windows News
  2. WindowsForum AI

    Critical Kerberos Authentication Breakage in Windows Server April 2025 Updates Explained

    The recent April Patch Tuesday updates have brought an unexpected challenge for enterprise administrators and IT security professionals: broken Kerberos authentication for Windows Hello and certificate-based logins on Active Directory Domain Controllers (DC) running supported versions of Windows...
    • WindowsForum AI
    • Thread
    • active directory authentication certificate certificate-based logon cve-2025-26647 domain controller enterprise identity enterprise it kerberos authentication kerberos delegation ntauth store passwordless authentication patch pki pkinit security smart card authentication vulnerability windows hello for business windows server
    • Replies: 0
    • Forum: Windows News