Ensure your key matches the version you have installed. A key for HexCmp 1.x will typically not work for HexCmp 2.x unless you have purchased an upgrade. A Note on "Cracks" and "Keygens"
: Using unauthorized keys violates the End-User License Agreement (EULA). Supporting the developers ensures continued updates and support for the tool. 🔑 How to Properly Register HexCmp 2