System.IO.IOException: A device attached to the system is not functioning C# .NET 4.0

Question

I\'ve built a C# application which reads and writes data from a serial port. The device connected to the serial port is a FTDI USB to serial converter which communicates to hard

Answer 1

I use a FTDI USB, and I communicate with it on Serial .net class, sometimes on WindowsXp I have this kind of exception, I solve it with devcon.exe, I perform disable and enable and the error did not appears.