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In the right pane, look for or LowerFilters and Delete them. Restart your computer. Troubleshooting Additional Causes Mastercam USB HASP issue - eMastercam.com
: Go to Settings > Privacy & security > Windows Security > Device security . mastercam+x72022+virtual+usb+bus+error+39+fixed
Download and install the latest HASP drivers from official support sites like Thales Customer Support. 3. Registry Editor Fix (UpperFilters/LowerFilters) In the right pane, look for or LowerFilters and Delete them
Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36fc9e60-c465-11cf-8056-444553540000} (This is the class for USB controllers). In the right pane
If disabling security doesn't work, the driver files may be corrupted. Open (Win + X). Expand Universal Serial Bus controllers .
Right-click the "Virtual USB Bus" or "HASP" device with the yellow exclamation mark and select .