Networking problems after the October 2026 Windows update? NTLM might be to blame
October 2026 Windows update blocks NTLMv1 single sign-on by default, which can break Wi-Fi, Ethernet, and VPN logins.
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Stories tagged #credential-guard
Windows 11 26H1 Security Update Expands Secure Boot Certificate Protection
Microsoft's Windows 11 26H1 update KB5124012 widens Secure Boot certificate deployment and patches two elevation flaws.
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Windows 11 KB5124008 Update Breaks Active Directory Domain Trust and Blocks User Logins
Microsoft's September Windows 11 cumulative update KB5124008 breaks Active Directory domain trust on domain-joined machines, blocking logins despite valid credentials.
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Windows 11 KB5124008 update breaks domain trust for some users
Microsoft is investigating Windows 11 KB5124008 breaking Active Directory domain trust, leaving some users unable to log in with valid credentials.
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