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Credential Security

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NTLMv1 Is Probably Still Running Even With LMCompatibilityLevel Set to 5

Mar 31, 2026

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2 min read

NTLMv1 Is Probably Still Running Even With LMCompatibilityLevel Set to 5

The fix is a two-step process audit first, then enforce. Most environments skip the first part entirely.

Cole Vane
Cole Vane

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