1. Verify your dongle is firmly plugged into a USB port

2. Open On-Screen Takeoff

3. Click File>Check Authorization

4. In the License Authorization dialog, your Host ID is listed - if this number is an 8 to 11 digit number, go to step 16 below

5. If this number is a long character string (ex. 000D000F000E etc.) or blank, the dongle driver is not properly installed or is not responding correctly

6. Close On-Screen Takeoff and unplug your dongle from your PC

7. Insert your On-Screen Takeoff CD 

If you do not have the CD, the driver is available from our Web site www.oncenter.com/support

8. Choose Install Software

9. Select Additional Software and Drivers

10. Select Sentinel Driver

11. Follow the instructions for the driver installation - reboot your computer if prompted

12. Once installation is complete and/or once the computer is rebooted, plug in your dongle - you should received a notification from Windows that new hardware is detected and being installed

13. Open On-Screen Takeoff

14. Click File>Check Authorization

15. Your Host ID should now appear as an 8 to 11 digit number - if it does, click  and your program should be authorized

    If your Host ID is not generating an 8 to 11 digit number, there is a problem with your computer, the operating system or dongle. Contact On Center Software Support.

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