Is it possible to disable NETBIOS over TCP/IP via Group Policy? I know you can disable it via DHCP server, but this will not affect the servers since they are static IP addresses. I am wondering if it is possible, or do I have to go through and change the properties on all the network cards manually?

You don't have option to disable NetBIOS over TCPIP through Group Policy.

+ You can create script file to set value to 2 to disable feature and push script through logon script.

HKLM\SYSTEM\CCS\Services\Netbt\Parameters\interface\TCPIP_GUID -

NetbiosOptions - REG_DWORD
Set Value according to requirement
1 - enable NetBIOS over TCPIP
2 - disable NetBIOS over TCPIP

+ You need to restart computer or disable and re-enable NIC for registry to come info effect.

hope this helps

• Marked as answer by Michael R. Mastro II Tuesday, May 05, 2009 9:24 AM

Yes this helps thank you.

Doesn't help with GPO because the GUID is different for each machine.

you can resolve the guid information when you change the place where the guid start to a star with PS

Your command will look like this

set-ItemProperty HKLM:\SYSTEM\CurrentControlSet\services\NetBT\Parameters\Interfaces\tcpip* -Name NetbiosOptions -Value 2