The background Windows service responsible for managing the license has stopped running.
This comprehensive troubleshooting guide explains why this error happens and provides step-by-step solutions to get your AccuMark system back up and running. Understanding the Root Causes a valid accumark license was not found for this product
In a network license environment, a central server "floats" a limited number of licenses to users on the network. The "valid license not found" error appears here if: The background Windows service responsible for managing the
Windows has a power-saving feature that puts USB ports to sleep. Go to your Power Options > Advanced Settings > USB Settings and set USB selective suspend setting to Disabled . This ensures your USB dongle never loses power. The "valid license not found" error appears here
Plug the dongle into another PC with AccuMark installed to see if the hardware is recognized. Step 2: Restart the Gerber and Sentinel Licensing Services
For users on a dongle-based license, the file that locks the license to the USB key can become corrupted. Reinstalling the license file can often resolve the issue.
This error typically indicates a communication break between the AccuMark software and its license source—whether that's a physical USB dongle, a local license file, or a network server. Quick Fix Checklist