The loader works by injecting code into an executable. This behavior is identical to how malware operates. Modern antivirus software, including , will quarantine or block the loader’s DLL injection attempts.
The VCDS Loader Kolimer was developed during the Windows 7 era. Windows 10/11 security patches break it.
Which are you using (e.g., Windows 10 or 11)?
You installed a newer version of VCDS (e.g., 22.10) but are still using an old Kolimer loader (e.g., v1.2 designed for 21.3). Version mismatch. The memory addresses the loader tries to patch have changed.
If a pop-up window within the software states that a new version or interface firmware update is available, always select No or Cancel . vcds loader kolimer failed 2
To keep your diagnostic setup from breaking down in the future, follow these maintenance rules:
Look for your cable (often labeled as Ross-Tech Direct USB Interface or USB Serial Converter ). If it has a yellow warning triangle, the driver is broken.
Common underlying causes include:
The Kolimer loader must match the exact version of the VCDS software you are executing. For example, if you are using Kolimer Loader v9.2, it must be paired with the supported VCDS software versions specified by the release notes of that specific loader version. The loader works by injecting code into an executable
Ensure your antivirus exclusion remains active, especially after major Windows updates. If you want to troubleshoot this further, let me know: What version of VCDS are you trying to run?
: Over the years, as Ross-Tech updated their software (e.g., from HEX-USB+CAN to ), Kolimer updated the Loader to keep pace. The "Failed 2" Error: The Breaking Point "Failed 2"
Follow these solutions in order.
Because the Kolimer loader acts as a software patch, security programs frequently flag it as a "Trojan" or "False Positive." Open or your custom antivirus dashboard. Navigate to Protection History or Quarantine . The VCDS Loader Kolimer was developed during the
Go to the tab and click Settings under the Performance section. Click the Data Execution Prevention tab.
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).
: If using a clone cable, launching the software while connected to the internet can sometimes "revoke" the interface or cause the loader to fail. Try running the loader while
Disclaimer: Using clone diagnostic tools and modified loaders (like Kolimer) may violate Ross-Tech's software licensing agreements. This guide is for educational purposes regarding troubleshooting the "Failed 2" error.
This error appears instantly upon launching the loader, preventing the software from bypassing the license check. It stops your diagnostic session before it even begins. In this comprehensive guide, we will dissect exactly what this error means, why it occurs, and provide a step-by-step roadmap to fix it permanently.
