Always disable your Wi-Fi or disconnect from the internet before launching the software to prevent the cable from being "bricked" by official Ross-Tech update checks.
This failure typically happens because Windows Defender has quarantined the loader file, the VCDS software has updated and blocked the hardware, or the cable's internal EEPROM firmware has been corrupted (de-flashed).
To ensure a clean and proper installation, please adhere strictly to this workflow: vcds loader kolimer failed 2
Reinstall the specific version of VCDS provided with your Kolimer loader.
If the basic troubleshooting steps above do not resolve the "failed 2" error, the problem may be more deeply rooted in your cable's firmware or Windows configuration. The following advanced solutions should be attempted with caution. Always disable your Wi-Fi or disconnect from the
Scroll down to and add your entire VCDS installation directory (usually C:\Ross-Tech\VCDS\ ) to the exclusion list. Step 2: Clean Reinstall and Re-Apply the Patch Uninstall your current VCDS version entirely.
: Windows Defender flags the VIIIPlusLoader.exe or VIIPlusLoader.exe file as malware and blocks its execution. If the basic troubleshooting steps above do not
The sections that follow will provide a clear, actionable guide to diagnosing and fixing the issue.
Users report “Failed 2” spikes immediately after a Windows update or after upgrading to a newer VCDS release without updating the loader.
Ensure you are using or later. Older versions frequently encounter "Failed 2" errors on modern Windows builds. Fix Windows HID Drivers Open Device Manager .