#NTLMAuthentication

Microsoft fixes Windows Server bug causing crashes, NTLM auth failures

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May 14, 2024 at 03:15PM Microsoft has resolved an issue causing NTLM authentication failures and domain controller reboots after April’s Windows Server security updates. The problem affects domain controllers with high NTLM traffic and few primary DCs. The fix is included in the May 2024 cumulative updates. Admins unable to install the latest updates can … Read more

Microsoft: April Windows Server updates cause NTLM auth failures

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May 1, 2024 at 11:18AM Microsoft has acknowledged NTLM authentication failures and high loads after installing recent Windows Server security updates. The issue affects domain controllers with high NTLM traffic and few primary DCs. Affected versions and updates include Windows Server 2022 (KB5036909) and others. While Microsoft works on a fix, organizations can uninstall the … Read more