Troubleshooting – “Valid Dongle could not be found” error

If you see the following message when opening the software, follow this guide to diagnose the problem.


Versions 8.1 and later require that a Hasp HL dongle is used. These can be identified as having HASP HL embossed on the casing. The dongle will either be black (single user – as shown below) or red (multi user network type).


If you have an old style dongle (usually purple in colour), please contact us to discuss exchange of your hardware, otherwise proceed with troubleshooting.


1. Remove your dongle from the PC. Reseat the dongle into a different USB port. Ensure that the dongle’s red LED is illuminated before proceeding.

If the red LED does not illuminate, this may indicate that either the dongle or USB port on the machine is defective. If you are using a desktop and are currently using the front USB ports, try using those in the back, as it may be the PC’s front header panel which is at fault and vice-versa.

Providing the LED is illuminating, continue the steps below, otherwise contact us for further assistance.


2. Open your web browser (Internet Explorer, Chrome or Firefox for example)

In the main address bar (not a search bar) – type http://localhost:1947 and hit return on your keyboard to load the page

If you get an error such as these shown below, it indicates that the HASP License Manager service is not running, or the drivers have not been installed or initialised correctly.


Possible Solutions: –

  • Restart the hasplms service

press CTRL + ALT + DEL to access Task Manager. In the Services tab, look for hasplms. If it is stopped, right-click and select Start


If you see an error when trying to re-start the service from here, then try through the Management Console as follows.

Click your Windows Start button. Type services.msc, into the search bar, then click the only option listed (with the gear icon)


When the console appears, look for Sentinel LDK License Manager and click on it. Click Start the service


  • Download and re-install the dongle drivers, which can be found here

3.  If when trying to load  http://localhost:1947 you get a page as below, this means that the drivers are installed correctly.



Click Sentinel Keys. This will list all Hasp USB dongles which the PC has detected

If no dongles are detected (table is empty) as in the image below. this would indicate that the dongle is either an old, unsupported type, or that it is broken. Please contact us so that we can run further diagnostics



4. If a dongle is detected, check the value listed in the Version column of the table. The Version should be 3.25. If it is 2.16 and an error message is displayed, you will be required to update the dongles’ firmware


Solution: – Download the Firmware Updater here. Once downloaded, run the updater and click the Apply Update button. You will be notified onscreen when the update has completed successfully.


If you can now see your dongle listed and the Version is reported as 3.25, as below, you should now be able to run the software


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