“Network mapping is disabled by default on domain networks. Your network administrator can use Group Policy to enable mapping.”

FIX:
Open up a command prompt with elevated privileges:
From the elevated command prompt, run the command "gpedit.msc" (no quotes). This will start the group policy editor with Administrator privileges for the local machine.

Inside of the Group Policy Object Editor, navigate the tree to Local Computer Policy -> Computer Configuration -> Administrative Templates -> Network -> Link-Layer Topology Discovery.

Once you are in the Link-Layer Topology Discovery section of the editor, simply Right-click and open properties for "Turn on Mapper I/O (LLTDIO) driver" and set it to Enabled, and also tick the "Allow operation while in domain" option.


Network domain administrators who want to enable the Network Map across a group of machines should follow these same instructions and, additionally, link the policy to the desired Active Directory container.