NTLMv1 hardening guidance
No content change seen yet. Watched since 12 Oct 19:19 UTC, last read 19 Oct 23:40 UTC, next check today 23:40 UTC.
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Timeline
From the capture of 12 Oct 19:19 UTC- 1 undated section
- 13 with conditions
Settings and overrides named on this page
Registry values, policies and cmdlets the source mentions, with the dated steps that name them. Read the source for the values to set.
LmCompatibilityLevel
Requirements, exceptions and scope
- Active Directory Hardening Series - Part 1 – Disabling NTLMv1RequirementExceptionScopeRecommendation22 conditions15 passages
LmCompatibilityLevelWe are often asked why Microsoft cannot simply harden Active Directory with a security update. While it would be nice if an "easy button" was…
Extracted automatically from Microsoft's wording. Confirm dates, conditions and whether they apply to you in the source before acting; a month or quarter is a window, not a day.
Observed history and review priority
Captured 12 Oct 19:19 UTC; extracted 16 Oct 16:10 UTC. Extractor: microsoft-1/9/fc65ebeb286710c0a830833db8a7e5de7e266b79981fe9c7c34479be9369ad3c.
Review priority. Extracted assertions require review · Applicability or exceptions require review
0 date changes and 0 condition changes across 0 compared revisions. Suggested check interval: 24 hours.
Earlier unavailable versions and edits between checks are unknown. A missing statement requires review; it does not mean the policy was cancelled. Recovered historical statements are not original revision snapshots.
Related public evidence
- Community source · 19 Oct 2026Should You Install Certificate Authority on a Domain Controller? PKI Design Best Practices
- Public source · 19 Oct 2026Retiring NTLM: Frequently asked questions
- Public source · 13 Oct 2026Active Directory Federation Services (AD FS) Spoofing Vulnerability
- Public source · 13 Oct 2026Active Directory Federation Services (AD FS) Spoofing Vulnerability
- Public source · 13 Oct 2026Active Directory Federation Services (AD FS) Security Feature Bypass Vulnerability
- Public source · 13 Oct 2026Active Directory Federation Services (AD FS) Security Feature Bypass Vulnerability
What changed
First observed 18 Oct 2026No field changes in the recorded history.
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