I searched for few days, and even if I see that there are people getting this error, I can't find a solution.
I have an application communicating over the serial port. The application is written in VB6 and 2 PCs, one with XP, the other one with Vista.
If I connect using the native serial port I get no error at all.
If I use the USB to serial adapter on XP, again I get no error.
If I use the bluetooth on XP I get error 8020
If I use the USB to serial adapter in Vista I get error 8020
I use as well a delphi aplication to communicate with the same device. It will work with no problem on both PC, on either connection.
I hope that I can find a solution to my problem.
data out USB to serial adapter,