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Allow remote access of Computer Management to Windows Server Core from RSAT Server Manager

Trying to remotely invoke Computer Management on newly installed Server Core instance invokes warning by default:

COM+ and WMI closed to you

To enable Computer Management from remote Server Manager instance in Windows Server Core:

open regedit - type regedit, hit enter

navigate: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\COM3 switch Com+Enabled DWORD from 0 to 1

or, change the regsitry from the command line:

reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\COM3 /v Com+Enabled /t REG_DWORD /d /1 /f

(if need to change back, change /d 1 flag to /d 0)

lastly, run these two firewall opening commands:

netsh advfirewall firewall set rule group="Windows Management Instrumentation (WMI)" new enable=yes

netsh advfirewall firewall set rule group="Remote Event Log Management" new enable=yes

If still not connecting with Computer Management, try this:

Set-NetFirewallRule -Name  "WMI-RPCSS-In-TCP" -Profile Domain -Enabled True

Now you should have access to remote Computer Management option in Server Manager

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