GPO: Cannot Edit Setting In Windows Firewall With Advanced Security

Description:

I wish I could find a screenshot of this but what happens is: You want to modify a GPO that is pushing firewall rules and you go to change them and you get a red box saying something about cannot connect to the domain only in that section of the GPO, other settings work fine.

To Resolve:

1. The fix is to find your PDC Emulator

   Get-ADDomain | Select PDCEmulator
   

2. RDP to that DC and then try editing the rules, it will then work!