If you are running Windows 11, the Memory Integrity feature may be blocking your dongle driver:
This error occurs when specialized software cannot detect its required physical USB security key (dongle). High-end software suites—such as CAD/CAM programs, video editing platforms, and industrial control systems—use these hardware keys to prevent software piracy.
Scroll through the list to find the licensing service associated with your software. Common examples include: Sentinel LDK License Manager HASP Loader CodeMeter Runtime Server Aladdin Knowledge Systems Right-click the service and select . If you are running Windows 11, the Memory
Look through the list for a dedicated category like or Smart card readers .
Scroll through the list to find the service matching your dongle (e.g., Sentinel LDK License Manager , HASP Loader , or WibuKey Server ). Common examples include: Sentinel LDK License Manager HASP
The error implies the dongle is physically absent, but this is often not the case. The failure can be categorized into four primary domains:
Some legacy dongles use unsigned drivers. On Windows 10/11, you can temporarily disable signature enforcement: The error implies the dongle is physically absent,
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Follow these solutions in order, from the simplest physical checks to advanced software configurations. 1. Perform a Basic Hardware Reset Often, the simplest solution is the most effective. Close the software entirely. Unplug the security dongle from the USB port. Wait 10 seconds.
Fixing the "Security Device Not Found: Please Attach Your Dongle and Restart the Software" Error