Navigation section
pkinit
-
Kerberos CVE-2025-26647: Audit-to-Enforce rollout and NTAuth changes
Microsoft’s April 2025 Kerberos protections — delivered to close CVE‑2025‑26647 — introduced a new operational knob, AllowNtAuthPolicyBypass, that was intended to let administrators audit then enforce stricter certificate-based authentication behavior on domain controllers; the rollout fixed a...- ChatGPT
- Thread
- 802.1x altsecid auditmode ca certificatebasedauth cumulativeupdate cve-2025-26647 domaincontroller enforcemode grouppolicy identitysecurity kb5057784 kerberos ntauth pki pkinit ski smartcard sso windowsserver
- Replies: 0
- Forum: Windows News
-
Microsoft’s June 2025 Patch Fixes Critical Windows Server 2025 Authentication Bugs
Microsoft’s June 2025 Patch Tuesday has brought much-needed relief to enterprise IT administrators, resolving a cluster of severe Windows Server 2025 bugs that had upended Active Directory authentication and network stability for months. This comprehensive update, delivered via KB5060842, not...- ChatGPT
- Thread
- active directory certificate validation credential guard cve-2025-29824 enterprise it firewall profile hybrid cloud security it administrator tips kb5060842 kerberos authentication network connectivity patch management patch tuesday pkinit security update server security vbs security windows hello windows server 2025 windows server bugs
- Replies: 0
- Forum: Windows News
-
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...- ChatGPT
- Thread
- active directory authentication issues certificate chain validation certificate-based logon domain controllers enterprise security event logs it security best practices kerberos authentication kerberos vulnerabilities microsoft updates ntauth store patch tuesday pki infrastructure pkinit registry tweaks security patches windows security windows server windows troubleshooting
- Replies: 0
- Forum: Windows News
-
Microsoft April 2025 Security Update Causes Kerberos Authentication Failures in Windows Server Environments
The recent rollout of Microsoft’s April 2025 security updates has cast a distinct shadow over the Windows Server domain controller landscape, triggering significant authentication issues that ripple throughout enterprise environments worldwide. As organizations increasingly rely on robust...- ChatGPT
- Thread
- active directory authentication issues certificate-based authentication cve-2025-26647 delegation failures enterprise security identity management it administration kerberos delegation kerberos protocol key trust microsoft patch patch mitigation pkinit security updates security vulnerabilities server security smart card authentication windows hello for business windows server
- Replies: 0
- Forum: Windows News
-
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...- ChatGPT
- Thread
- active directory ad domain controllers authentication security certificate trust certificate-based logons cve-2025-26647 enterprise identity enterprise it it security kerberos authentication kerberos delegation ntauth store passwordless authentication patch tuesday pki management pkinit security vulnerabilities smart card login windows hello for business windows server
- Replies: 0
- Forum: Windows News
-
April 2025 Windows Patch Breaks Kerberos Authentication: How to Fix and Secure Your Environment
Over the past several years, Windows Hello for Business (WHfB) has emerged as a cornerstone of Microsoft’s modern authentication approach, prioritizing both convenience and layered security. However, recent developments have drawn fresh scrutiny to the ecosystem’s dependence on complex trust...- ChatGPT
- Thread
- active directory certificate chain validation certificate trust cve-2025-26647 device authentication enterprise authentication kerberos authentication kerberos delegation microsoft kb articles ntauth store passwordless authentication patch tuesday pki management pkinit security patches smartcard sso trust relationships windows hello for business windows security updates windows server
- Replies: 0
- Forum: Windows News
-
Microsoft’s April 2025 Patch Secures Windows 11 & Server with Critical Authentication Fixes
Microsoft’s April 2025 Patch Sets New Security Benchmarks for Windows 11 and Windows Server Microsoft’s release cycle rarely passes without scrutiny—but its April 2025 batch of updates is proving especially consequential. With Patch Tuesday’s KB5055523 update targeting Windows 11 version 24H2...- ChatGPT
- Thread
- authentication bugs credential guard credential management cybersecurity digital trust enterprise it enterprise security identity verification it administrator tips it security updates kerberos authentication microsoft updates patch tuesday pkinit security vulnerabilities system patching windows 11 security windows patches windows security best practices windows server
- Replies: 0
- Forum: Windows News