Hi,
I am running 3.55 on one primary and one secondary (both running x64 Win 10 Pro). It has been functioning fine for years.
Without any reason that I can detect, no control is possible on the secondary. The mouse moves but buttons dont work, kbd doesnt work, pressing ctl-alt-delete on title bar doesnt work.
My lan is configured as private. I have completely disabled windows firewall and I dont have any av on it.
I have no idea how to proceed because all your FAQ says is disable firewall.
I do have wireshark, if you want a trace
Thanks