Specifies whether an entry for DirectAccess connectivity appears when the user clicks the Networking notification area icon.
Set this to Disabled to prevent user confusion when you are just using DirectAccess to remotely manage DirectAccess client computers from your intranet and not
providing seamless intranet access.
If this setting is not configured, the entry for DirectAccess connectivity appears.
At least Windows Server 2008 R2 or Windows 7
In Registry Editor we can see the following changes:
For Enabled we get:
FullKeyPath : HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\NetworkConnectivityAssistant
ValueName : ShowUI
Value : 1