The Link-Local Multicast Name Resolution (LLMNR) protocol is enabled by default. The active directory has a Group Policy Object (GPO) you can configure to prevent its domain workstations from using LLMNR.

To disable LLMNR through the GPO, perform the following steps:


  1. Open gpedit.msc file.
  2. Navigate to Local Computer Policy > Computer Configuration > Administrative Templates > Network > DNS Client.
  3. Click Turn Off Multicast Name Resolution and set the value to Enabled.