If your computer throws an "Unknown USB Device" error when you plug the cable in, the software has successfully wiped the cable's identity. You must manually rewrite the correct Vendor ID (VID) and Product ID (PID) back onto the cable's FTDI chip. Step 1: Download the Utilities
Choose , browse to select the VCDS.exe file, and select Block the connection . Repeat this process for Inbound Rules .
There are several reasons why a VCDS license may be revoked, including: vcds revoked fix
Running an official VCDS software update while an unauthorized clone cable is plugged in triggers a security check.
Rarely, aggressive antivirus (Norton, McAfee) or a Windows update will block VCDS from "phoning home." The software then assumes the lack of response means you are using a clone, so it self-revokes. If your computer throws an "Unknown USB Device"
I can provide specific firewall rules or driver reinstallation steps tailored to your setup. Share public link
Before you throw your cable out the window, understand that The fix depends entirely on whether you own a genuine Ross-Tech cable or a third-party clone. Repeat this process for Inbound Rules
To prevent the software from checking the internet and revoking your cable again, you must block its internet access. Open and click Advanced Settings . Click Outbound Rules , then select New Rule .
: If you have a limited VIN interface (e.g., 3 or 10 VINs), the license may appear "revoked" if you have exceeded your limit and are trying to access a new vehicle.
During installation, ensure you check the box to install the . Step 4: Block VCDS in Windows Firewall
