This is the #1 solution for 90% of users.
Open , find the Ross-Tech device under "Universal Serial Bus controllers," right-click it, and select Uninstall device , ensuring "Delete the driver software for this device" is checked.
The loader requires deep system permissions to hook into the VCDS software package. Right-click on your shortcut. Select Properties and navigate to the Compatibility tab. vcds loader kolimer failed 2
A: You accidentally installed a cracked loader over a genuine installation. Uninstall everything, download fresh VCDS from Ross-Tech’s website, and never run Kolimer.exe again.
Delete any remaining folders left behind in the C:\ directory. This is the #1 solution for 90% of users
This error typically happens when the FTDI driver for the cable is not installed correctly. The fix is to manually update the driver. Go to Windows Device Manager, find the cable under "Universal Serial Bus devices" or "Ports (COM & LPT)," right-click, and choose "Update driver." Then, navigate to the Driver folder within your VCDS installation directory to install the correct FTDI driver.
VCDS will not run on Windows 10/11 in S Mode . Ensure your PC is running in Home or Pro mode. Right-click on your shortcut
| Cause | Likelihood | | :--- | :--- | | | Very High | | Incorrect installation process | High | | Unsupported VCDS/loader version combination | Medium | | Corrupted or missing system files | Medium | | Hardware (cable) incompatibility | Medium | | Corrupted loader files | Low |
The error typically occurs when using unauthorized VCDS (Vag-Com Diagnostic System) "clone" interfaces with the Kolimer loader, often triggered by a mismatch between the loader version, the VCDS software, and the interface hardware. Understanding the Error
: 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"
