GPO tool

Group Policy made searchable

A free ADMX browser or comparison tool for IT administrators. Search policies, find registry keys, and see exactly what each setting writes to the Windows Registry. Or compare two GPO backups to see exactly what has changed between them.

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Turn off multicast name resolution

Specifies that link local multicast name resolution (LLMNR) is disabled on client computers.

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 client computer to another client computer 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 client computer.

If you disable this policy setting, or you do not configure this policy setting, LLMNR will be enabled on all available network adapters.

Registry Information

VendorMicrosoft
ProductDns Client
CategoryDNS Client
Applies toComputer Configuration
Supported onWindows Vista
Registry Key[HKLM]SoftwarePoliciesMicrosoftWindows NTDNSClient
Value NameEnableMulticast
TypeREG_DWORD
Enabled value0
Disabled value1