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.

Additional Information

  1. Registry path is:

    HKEY_LOCAL_MACHINE -> Software -> Policies -> Microsoft -> Windows NT -> DNSClient # EnableMulticast

  2. The Administrative Template path is:

    Network -> DNS Client


* Making mistakes while changing registry values can affect your system adversely. We recommend you to create a System Restore point before making registry manipulation. If you're new to Registry Editor, read this beginner's guide.
** To locate the registry and administrative template path, checkout beginner's guide.
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