I cannot access the serial port, COM1:. I used to be able to but now any app, such as Hyperterminal, that tries to open COM1: puts up a small info window that says "Unable to open COM1. Please check your port settings."
Any idea what might be causing this?
According to Device Manager the port is working correctly.
I'm wondering if another auto started app that I don't know about has opened the port. Is there any way to find out what apps have opened the serial ports on the PC?
I'm running Win XP home with all service packs and updates.
Any help really appreciated.