Policy

Turn off multicast name resolution

Windows 11 25H2

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Policy overview

Key metadata and intent for this policy.

ClassComputer
CategoryNetwork > DNS Client
Supported onAt least Windows Vista

Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista

Specifies that link local multicast name resolution (LLMNR) is disabled on the DNS client. LLMNR is a secondary name resolution protocol. With LLMNR, queries are sent using multicast over a local network link on a single subnet from a DNS client to another DNS client on the same subnet that also has LLMNR enabled. LLMNR does not require a DNS server or DNS client configuration, and provides name resolution in scenarios in which conventional DNS name resolution is not possible. If you enable this policy setting, LLMNR will be disabled on all available network adapters on the DNS client. If you disable this policy setting, or you do not configure this policy setting, LLMNR will be enabled on all available network adapters.

Internal name
Turn_Off_Multicast
Policy ID
848e1fa7499e
Elements
0

Registry values

How enabled and disabled states update the registry.

Registry locationTypeEnabled valueDisabled value
HKLM\Software\Policies\Microsoft\Windows NT\DNSClient\EnableMulticastREG_DWORD
0
1

Policy elements

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This policy has no additional user input fields.

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