Enable Network Discovery GPO not taking effect

Question

Hi
I've created a GPO to turn on Network Discovery on our company laptops as our AV server isn't able to discovery a number of clients for an update roll out. I've enabled the both "Turn on Mapper I/O (LLTDIO) driver" and "Turn on Responder (RSPNDR)
driver" in Computer Configuration > Policies > Administrative Templates > Network > Link-Layer Topology Discovery. I've set it to only apply to the Domain network. I then applied the policy to the OU containing the laptops and scoped it to
the default Authenticated Users group.
Group Policy Modeling shows that the policy is applying. However, Network Discovery is still turned off on laptops that should be applying it.
David

Answer 1

Hi David,
Please try the following steps to solve this issue:
You must also enable the LLTD Responder component on any computers that you want to appear on your Network Map.
Please add the following policy to this GPO:
Expand "Computer Configuration", "Windows Settings", "Security Settings", "Windows Firewall with Advanced Security", and then "Windows Firewall with Advanced Security - {policy you have open}".
Right-click on "Inbound Rules", and then click "New Rule".
In the Rule Wizard, on the Rule Type page, select "Predefined", and then select Network Discovery from the list. 
Click Next.
On the Predefined Rules page, ensure that the check box is on each rule that is part of the Network Discovery group, and then click Next.
On the Action page, select "Allow the Connection", and then click Finish.
Regards,
Lany Zhang