By following these steps, you can usually resolve the "Valid AccuMark license not found" error and get back to your design work without significant downtime.
A floating license managed by a server.
The error usually triggers because the service has stopped, the dongle is unrecognized, or the license has expired. Step-by-Step Troubleshooting 1. Check the Physical Connection If you use a USB dongle: a valid accumark license was not found for this product
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Ensure the "Status" says and "Startup Type" is set to Automatic . 3. Access the Sentinel Admin Control Center By following these steps, you can usually resolve
If you are on a subscription model, your payment may have failed or the term ended.
In the Admin Control Center ( localhost:1947 ), go to and ensure "Allow Access to Remote Licenses" is checked. When to Contact Gerber Support Step-by-Step Troubleshooting 1
If the USB key is physically broken, Gerber will need to issue a replacement and a temporary code. Summary Checklist Is the USB dongle plugged in and glowing? Is the Sentinel LDK License Manager service "Running"? Can you see the key at http://localhost:1947 ?
Install it, restart your computer, and try launching AccuMark again. 5. Check Network and Firewall Settings If your office uses a :