Policy
Block NTLM Server Exception List
Microsoft Windows
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows11, WindowsServer2025
This policy setting determines if NTLM can be used to access specified servers. If you enable this policy setting (valid only if NTLM (LM, NTLM, NTLMv2) is blocked), NTLM can be used to access servers specified. Please enter the desired servers (DNS name, IP address or NetBIOS name) in the edit box, one server name per line. If you disable or do not configure this policy setting, the NTLM access to servers will be determined by other settings.
Internal name
Pol_BlockNTLMServerExceptionList
Policy ID
b869f7d12bda
Elements
1
Registry values
How enabled and disabled states update the registry.
No explicit registry values are set for enabled or disabled states.
Policy elements
Inputs and configuration options exposed by this policy.
| Scope | Element | Type | Registry mapping | Constraints & behavior | Copy |
|---|---|---|---|---|---|
| Computer | MultiText_BlockNTLMServerExceptionList ID MultiText_BlockNTLMServerExceptionList | list | Path Software\Policies\Microsoft\Windows\LanmanWorkstation Value name BlockNTLMServerExceptionList Type REG_MULTI_SZ | None |
MultiText_BlockNTLMServerExceptionList
Registry mapping
Path
Software\Policies\Microsoft\Windows\LanmanWorkstation
Value name
BlockNTLMServerExceptionList
Type
REG_MULTI_SZ
DetailsNone