Microsoft Windows Server Updates Trigger NTLM Authentication Issues

Microsoft

Microsoft Windows Server Updates Trigger NTLM Authentication Issues

  • A limited number of primary domain controllers (DCs) in their environment.
  • A high volume of NTLM authentication traffic.
  • Monitor your environment: Closely monitor domain controller performance and user login activity to identify any NTLM authentication issues.
  • Consider a rollback (if feasible): In critical environments experiencing severe disruption, rolling back the April updates on your domain controllers might be a temporary solution. However, proceed with caution, as this reintroduces potential security vulnerabilities.
  • Explore alternative authentication methods: If feasible, consider migrating applications away from NTLM and towards more secure protocols like Kerberos. This is a long-term solution that strengthens your overall security posture.
  • Stay informed: Keep an eye on official Microsoft channels for updates regarding the issue and the availability of a permanent fix.

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