Click . A red warning box will pop up stating that Windows cannot verify the publisher. Click Install this driver software anyway . Configuring the Software COM Port
: The driver often functions by emulating a serial COM port for USB interfaces. This is essential for using the cable with third-party software or older tuning tools that expect a standard serial connection.
The VAG-COM 908 is an older interface, and its original drivers were primarily designed for 32-bit versions of Windows, such as Windows XP. A significant challenge arises when attempting to install these older drivers on modern 64-bit versions of Windows (7, 8.1, 10, and 11). Many users report that Windows will not automatically find the correct drivers, or the installation fails entirely. One user on a VAG forum explicitly mentioned receiving an error message: "necesito la version de 64 bits del DPinst.exe" (I need the 64-bit version of DPinst.exe) when trying to install drivers on a 64-bit Windows 7 system, highlighting the exact nature of the conflict. vag 908 usb driver 64 bit
The step-by-step guide and comprehensive overview below break down exactly how to locate, install, and troubleshoot your VAG 908 interface. Understanding the VAG 908 Interface and 64-Bit Architecture
To make the VAG 908 cable work, you need the 64-bit USB driver files, typically consisting of rt-usb.inf and rt-usb.sys (often derived from FTDI chip drivers, which VAG cables use to bridge the USB-to-Serial connection). Configuring the Software COM Port : The driver
A: No. The drivers are x64 only. ARM64 emulation for USB serial devices is poorly supported.
The most common error. Your VCDS software is installed, but it cannot "see" the cable when you click "Test" in the Options screen. A significant challenge arises when attempting to install
The VAG 908 USB driver 64-bit is necessary for the following reasons:
The legacy VAG 908 drivers are natively compatible with Windows XP (32‑bit). By installing a virtual machine (VM) with Windows XP, you bypass all 64‑bit compatibility issues entirely. As one source explains: “To install VAG-COM 908.0 Release on Windows 7 64‑bit, you must create a virtual machine with Sun VirtualBox or Virtual PC on your laptop and install Windows XP in it; then you can install VCDS 908.0 and work with it on your cars.”