Right click “Inbound Rules” and select “New rule…”.

Navigate to “Computer Configuration/Policies/Windows Settings/ Security Settings/ Windows Defender firewall with Advanced security”.

Edit an existing Group Policy object or create a new one using the Group Policy Management Tool.

To Allow inbound Remote Service Management please follow these instructions. You will require the Group Policy Management Tools on Windows 7, Windows 8, Windows 10, Windows Server 2008, Windows Server 2012, Windows Server 2016 or Windows Server 2019. If remote service management is not allowed through the Windows Firewall any operations the connect the Windows Services Manager may fail or take a long time to connect. Anywho - I have a bunch of boxes now and am really missing the MMC if someone could provide an answer or verification.How to Allow Remote Service Management through the Windows Firewall with Advanced Security using Group Policy

I imagine Windows Admin Center is the next logical answer though I do not have a working gateway service. I know there are numerous commands vis netsh or PowerShell or GPO, many of which I'm using so I'm not entirely in the dark or unable to manage th ese, but I'm wondering if the MMC is now entirely unsupported/incompatible, or if there is some configuration option I've not toggled which sorts the MMC error I am seeing. I can connect to these core versions of Windows Server 2016 to visually audit or quickly toggle unrelated rules on or off in mass using the MMC firewall tool but I've thus far been unable to do so for the new core Windows Server 2019 servers. I long ago scripted out firewall configurations for each server role using NETSH ADVFIREWALL and all of that is good, no problems.

I'm in the process of migrating all services across the operation from core installs of Windows Server 2016 to core installs of Windows Server 2019. I have tried very hard to find an answer to this out here before creating a new post, so apologies I'm recreating an already spun wheel.

Windows firewall remote management