Temporarily disable third-party antivirus or Windows Defender → reinstall drivers → add AutoData and Sentinel processes to exclusion list.
| Cause Category | Specific Issue | |----------------|----------------| | Driver Failure | Missing, outdated, or corrupted Sentinel HASP/LDK drivers | | USB Port Issues | Faulty port, insufficient power, or USB 3.0 compatibility (rare) | | Physical Dongle | Damaged or counterfeit Sentinel Key | | Windows Update | Recent OS update overwrote or blocked driver | | Permission Conflict | User does not have local admin rights to load drivers | | Antivirus / Firewall | Security software blocking driver installation or communication | | Registry Corruption | Corrupted entries for Sentinel runtime | sentinel key not found autodata
If running in a VM (VirtualBox/VMware), ensure USB controller is enabled and the Sentinel key is passed through to guest OS. sentinel key not found autodata
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