If you see "Interface not found", repeat Step 4 and ensure you selected a COM port below 4.
Disclaimer: Ross-Tech official support for 908 has ceased. The following methods utilize their generic USB driver packages, which are designed to support older interfaces. 1. Download the Necessary Files
The VAG-COM 908 diagnostic interface (also known as VCDS 908) is a popular tool for reading and clearing fault codes, performing adaptations, and unlocking hidden features on vehicles from the Volkswagen Auto Group, including Audi, SEAT, Škoda, and Volkswagen.
If a warning window pops up stating that the driver is unsigned, click . Configuring the Software COM Port vag 908 usb driver 64 bit
Because the VAG 908 driver is unsigned by modern Microsoft standards, Windows will block it by default. Follow this precise execution sequence to complete the setup: Step 1: Disable Driver Signature Enforcement
The VAG 908 is a popular K-line and CAN-bus interface cable. It is designed to work with VCDS software (versions 908, 912, 10.6, 11.2, and up to 12.12). The "908" in its name originates from the software version it originally accompanied—VCDS 9.08.
32-bit drivers cannot be executed by a 64-bit Windows kernel. If you see "Interface not found", repeat Step
If you are running Windows 10 or 11, you must temporarily disable the strict driver signature requirement, otherwise the system will block the VAG drivers. Click the and select Settings .
Facilitates connection to Volkswagen, Audi, Seat, and Skoda vehicles from approximately 1994 up to 2010 models. Technical Capabilities Enabled by the Driver
The VAG 908 (often paired with VCDS or VAG-COM software) is a third-party diagnostic cable used by mechanics and car enthusiasts. It allows deep level access to the Electronic Control Units (ECUs) of Volkswagen, Audi, Seat, and Skoda vehicles. Configuring the Software COM Port Because the VAG
If your device is not automatically recognized, use these steps to manually point Windows to the 64-bit drivers:
Installing this driver is a manual process. Before you begin, from your computer.
A standard 32-bit driver cannot function on a modern 64-bit version of Windows (such as Windows 10 or Windows 11) due to structural kernel protections. When you plug an older VAG 908 diagnostic cable into a modern laptop, Windows typically flags it in the with a yellow exclamation mark under an "Unknown Device" or "USB Serial Converter" listing.