Check if LLMNR is disabled with PowerShell

Check if LLMNR Is disabled with PowerShell

Get-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient" -name EnableMulticast


If it returns an error then it is not set.



example

PS C:\support\scripts> Get-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient" -name EnableMulticast


EnableMulticast : 0
PSPath          : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows
                  NT\DNSClient
PSParentPath    : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT
PSChildName     : DNSClient
PSDrive         : HKLM
PSProvider      : Microsoft.PowerShell.Core\Registry


Get Just the value

$(Get-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient" -name EnableMulticast).EnableMulticast

Returns 0 if disabled.