Policy
Block NTLM (LM, NTLM, NTLMv2)
Microsoft Windows
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows11, WindowsServer2025
This policy controls if the SMB client will block NTLM for remote connection authentication. If you enable this policy setting, the SMB client won't use NTLM for remote connection authentication. If you disable or do not configure this policy setting, the SMB client can still use NTLM.
Internal name
Pol_BlockNTLM
Policy ID
5bdea4597e3e
Elements
0
Registry values
How enabled and disabled states update the registry.
| Scope | Registry location | Type | Enabled value | Disabled value | Copy |
|---|---|---|---|---|---|
| Computer | Path Software\Policies\Microsoft\Windows\LanmanWorkstation Value name BlockNTLM | REG_DWORD | HKLM 1 | HKLM 0 |
Registry location
Path
Software\Policies\Microsoft\Windows\LanmanWorkstation
Value name
BlockNTLM
Hive
HKLM
Enabled value
1
Disabled value
0
Policy elements
Inputs and configuration options exposed by this policy.
This policy has no additional user input fields.