For the time being I’ve pretty much given up on trying to get old DOS doors to run under Windows 10 64bit. I know with DOSBox and possibly Doorway it’s possible but I’ve been messing about for a couple of days and not made much progress. I may return to it later and switch gears. Possibly try qemu to get it working.
Still have a lot of configuration to do but am going out of town to Denver next Friday for an Ingress Anomaly so some of it may have to wait.
The games that are there are working fine, some are native Mystic games, some are actual 32 bit doors and the rest are running on either BBSLink or DoorParty.