Cannot access development webserver on LAN X80-5G
I have just changed from another router to a Deco X80-5G.
Everything (internet access, WiFi, etc.) works as expected, except I cannot access a webserver running on a PC machine on the LAN from my Mac.
I can ping the PC machine from my Mac.
I can RemoteDesktop to the PC machine from my Mac.
I can access the webserver from a browser on the PC machine.
I cannot access the webserver from a browser on my Mac.
I cannot traceroute to the PC machine from my Mac.
I have tried port forwarding, but it does not help.
This was working before I upgraded to 5G router.
How can I diagnose the problem and/or access the webserver running on PC from my Mac?