Is the on the dongle currently glowing or flashing?
indicates that your software is encrypted and requires a physical USB security key (dongle) to verify your license. Without this hardware key, the software cannot unlock its full functionality or even launch. MELCO Help Center Common Causes Resolving Security Device (USB) Issues (Dongle)
The "Security device not found" error can occur due to several reasons:
) cannot find the required physical USB security key (dongle) needed to verify your license Since you mentioned "upd," it’s likely you are trying to your software or the dongle itself has a license update Quick Fixes Re-seat the Dongle
The error mentions "restart the software updater" specifically. This is crucial. The updater process runs as a background service (e.g., hasplms.exe for Sentinel or CodeMeter.exe ). Even if your dongle works in the main application, the updater runs under different system privileges.
This error message typically appears when professional software (such as , Melco , or Fiery ) cannot communicate with the physical security USB key (dongle) required to verify your license. 1. Perform Hardware Troubleshooting