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ntlm auditing
About this tag
NTLM auditing is a critical practice for organizations preparing for Microsoft's gradual deprecation of the NT LAN Manager authentication protocol. Recent discussions on WindowsForum.com highlight how Microsoft's security baselines for Windows Server 2025 and preview builds are moving to block NTLM by default, forcing IT teams to audit legacy dependencies. Key themes include using Group Policy and registry settings to monitor NTLM usage, identifying compatibility issues in enterprise environments, and planning migrations to more secure protocols like Kerberos. The tag covers practical steps for auditing NTLM traffic, understanding telemetry from security baselines, and addressing technical debt before a full deprecation rollout.
Microsoft’s February 2026 security baseline (v2602) for Windows Server 2025 marks a clear step toward a more secure, legacy‑resistant default posture — but it also forces operations teams to confront compatibility and telemetry realities before an enterprise‑wide rollout.
Background
Security...
Microsoft’s move to flip NTLM off by default in preview builds is the latest signal that the long, gradual retirement of a three‑decade‑old authentication relic is now an operational priority — and it will force IT teams to confront years of technical debt, compatibility traps, and process gaps...