I'd love to keep playing on Win11, too!
EDIT:
Coconet continued to work work on one of my laptops that was upgraded from Win10, not on a fresh Win11 install. BUT it can be played in a virtual machine. I succeeded with VirtualBox and a windows 10 64bit installation. Guest Additions must be installed and adequate resources given, like 8GB RAM and 8 cpu kernels. I had to additionally check the .net option in the coconet installer and have a couple of minutes patience until it finished (it appeared to hang but did not).
I even got a network game to run in a local network of two Win11 machines, each running a VirtualBox Win10. The VirtualBox network has to be switched to network bridge, then both coconet instances can find each other.
If anyone needs help you an write me at
froese@gemini-sites.de since this forum unfortunately does not send notifications for new entries.