Error starting Nextgen, "Unable to access Sentinel Run-time environment (H0033)"

Starting the program the following message is shown:

Unable to access Sentinel Run-time environment (H0033)

The problem is usually caused by a Windows update that conflicts with the security key drivers.

Simply reinstalling the protection key drivers will resolve the error: a copy of these drivers can be found from our Download Center.

Please follow this procedure:

  • Phisically disconnect all the USB protection keys from the computer, including those for other software

  • Uninstall "Sentinel runtime" from the Control Panel

  • Restart the computer

  • Reinstall the drivers downloaded from the link above

  • Reconnect the USB keys to the computer

  • Restart the software

Network license

If a network license is used (red USB dongle), it may be necessary to update the drivers on the server to which the USB key is connected to.