Are you using a or a digital activation code ?

Ensure port 22350 is open if you are using network licenses.

Unplug any USB CmSticks before starting.

v6.40b was designed for older versions of Windows. If you are on Windows 11, you may need to right-click the installer and use Compatibility Mode for Windows 7 or 10. To help you get your software running, could you tell me:

If you have the original CD, USB, or ISO file for your application, look for a folder named Drivers , Redist , or CodeMeter . The v640b installer is likely included there. 🚀 Installation and Setup