USB CDC problem in Windows Vista 64 bit

[necr0potenc3]

Hello everyone,

I`m using CCS 4.093 with a PIC18F2550 and I`m trying to get the USB CDC bootloader to work.

I`ve tested it in my main computer (which runs Windows XP 32 bit) and it works properly, the CDC driver is installed and I can load programs to the bootloader through teraterm.

The problem is when I try to get it to work with my laptop (which runs Windows Vista 64 bit). I downloaded Microchip`s USB driver for Vista64, changed the VID and PID and installed the driver succesfully. But when I plug my PIC in the USB I hear the connect sound and a few seconds later the disconnect sound.

Checking in the Device Manager under the PORTS section, the virtual port (in my case COM5) is listed as disconnected (Error code 45) even though my PIC is plugged in the USB.

So to make things short, the CDC bootloader works in Windows XP 32 bit but not on Vista 64 bit, even though the driver is installed (using Microchips driver).

Any ideas?