I’ve read those instructions and they are basic.
What I already listed is more in depth:

(settings/components/firewall/customize/packet rules: allow-tcd/udp-my ip-in/out-local port #-profile all)

I believe it is set right, but not working.

I know have another problem and I am thinking it is all due to the last update I got 17.4.2294 (17.4.3482.0)

Davinci Resolve has suddenly stopped being able to access ports too.
I have it set to allow everything for the program but it does not.
I have Resolve set to the top (5th) bar and ports to ‘all’.
If I disable the firewall it works fine.

I watched the firewall logs for ports that looked like they needed access during the bootup of Resolve and added some until I see no blocks showing, but it still does not work.

Nothing I try, other than shutting off avast will let Resolve boot without a long wait and a port access error.