My host system is Win 11 Pro with Hyper-V enabled, also using "Enhanced session mode".
I have a few Ubuntu versions installed manually (I downloaded the ISO and ran install), but they always have issues. So this time I used Quick Create and the latest long term support version of Ubuntu (22.04). I hoped it would work better because it was curated.
And it connects just fine when I launch it from Hyper-V Manager. It uses the XRDP protocol with an Xorg session. Wow!
Now, on all my manually installed Ubuntu VMs, I have never seen that XRDP screen when launching from Hyper-V Manager. I only see it when I try to connect from Remote Desktop. So I assumed this time it's working better than usual.
But when I try to connect from Remote Desktop, I get the error "Remote Desktop can't connect to the remote computer".
I have Googled my butt off, tried lots of seemingly pointless things, and proven those things were pointless. Nothing I've tried so far has made a difference.
For the "Computer" field of Remote Desktop, I tried using the actual computer name, the IPV4 address, and the IPV6 address. Nothing worked.
But... I can ping from host to guest, and from guest to host.
XRDP is obviously installed in the guest Ubuntu system.
I have no idea what's causing it to not connect.