The "VCDS Loader Kolimer Failed to Update" error typically occurs when using a VIIPlusLoader Kolimer loader for third-party (non-genuine) VCDS interfaces
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Uninstall all existing VCDS software and delete any remaining folders in your vcds loader kolimer failed 2 updated
Some users report that after fixing the error once, it returns every few weeks. This is usually due to: The "VCDS Loader Kolimer Failed to Update" error