I am using an SIO2PCUSB device to connect my Atari 130XE to my Windows 10 PC. The Windows 10 PC is a headless file server, so I can't see what is happening unless I connect to it remotely. It does log me on automatically, and RespeQT is set to start when I log in.
Most times, when I try to start the connection I see a "Cannot open serial port 'COM5': Access is denied" message. If I keep clicking the connect button it will connect after a few tries.
There is nothing else using COM5 that I can find. When the connection is made everything works great. But if I change a setting, or even just opening RespeQT, I can't be guaranteed that the connection will work.
Does anyone have any idea why this might be happening?