- Your software has been locked, typically because: you ran VCDS without the loader, your computer connected to the internet without proper host file blocking, or your antivirus removed or corrupted the loader. Uninstall, delete the C:\Ross-Tech folder, restart, and reinstall with antivirus disabled.

Turn the vehicle’s ignition to the position (Engine off, dash lights illuminated). Plug the USB cable of the interface into your computer.

: For extra security, experts on Scribd suggest creating a Windows Firewall rule specifically to block VCDS.exe from accessing the internet.

: Install the software directly on your PC’s hard disk (usually C:/Ross-Tech/VCDS ) to ensure it runs correctly.

Open the extracted folder and copy the loader executable file (often named VCDSLoader.exe or VCIConfig.exe ).

and ensure your VCDS cable is not plugged into the computer. Double-click the official VCDS 21.9 installer. Follow the on-screen prompts. Accept the license agreement.

Disclaimer: This article is provided for educational purposes only. The installation and use of cracked software violates software licensing agreements and may be illegal in your jurisdiction. The author assumes no responsibility for any damage, data loss, or legal consequences resulting from following this guide.