Work through these solutions in order from least to most invasive.
If you work in professional audio, video editing, CAD design, architectural rendering, or industrial automation, you have likely encountered a frustrating pop-up window just when you need to meet a deadline:
"Security device not found. Please attach your dongle and restart the software updater."
This message is the hallmark of a hardware license key (dongle) based Digital Rights Management (DRM) system, most commonly associated with software from brands like PACE Anti-Piracy (iLok), WIBU (CodeMeter), SafeNet (Sentinel) , or legacy versions of Avid, Autodesk, and Steinberg. Work through these solutions in order from least
Seeing this error means your computer cannot communicate with the physical USB device that holds your software license. Without it, the software refuses to run, update, or even open. Below, we break down exactly why this happens and provide a step-by-step guide to getting back to work.
If you have tried all the above and still see "Please attach your dongle and restart" , your dongle may have suffered a logical failure.
For Sentinel HASP/LDK:
For CodeMeter:
For WIBU (WibuKey):
After restarting the service, attempt the software updater again. Do not just relaunch the updater UI—restart the service first. "Security device not found
Often, the software updater is running, but the background security service is stuck.
For PACE / iLok:
For CodeMeter (WIBU):