Follow these troubleshooting steps in order to restore your diagnostic software. Step 1: Check and Restore from Antivirus Quarantine
Many users attempt to run the loader directly from the ZIP file. Executable files cannot function correctly inside compressed folders. The loader must be extracted to a dedicated folder on your hard drive (e.g., C:\VCDS ).
Never update VCDS via the official Ross-Tech prompts if you use an aftermarket cable. The updated official software will blacklist your hardware and delete your loader.
Using a "loader" indicates you are likely using a clone/third-party interface. Never update
Temporarily disable your real-time protection, re-download the software package from your cable supplier, and copy the loader back into the Ross-Tech folder.