Diagnosys drivers are not signed, which means that additional steps must be taken during Windows 10 installations and after select Windows 10 updates that disable unsigned drivers.
To install unsigned drivers, you must boot into Advanced Startup Mode.
You may wish to print these instructions out, as you will need to restart the Espion computer as part of these instructions.
Start by pressing the Windows start button in the lower left and pressing the Settings icon (the small gear at left).
When the settings menu appears, select the Update and Security section.
From there, select the Recovery option at right, and under Advanced Startup press the button labeled Restart Now.
The machine will restart. You'll be asked to choose an option - select Troubleshoot.
From the Troubleshoot menu, select Advanced Options and then Startup Settings.
When the Startup settings appear, select option 7 - Disable driver signature enforcement by pressing the number 7. Some machines, such as Microsoft Surfaces, may require that you press F7 instead of the number pad.
Once the computer has restarted, open the Device Manager. The easiest way to do this is to open the start menu and typing Device Manager -- it will appear as a recommended option at the top of the screen.
We are looking for any instance of "Espion" or "Diagnosys" or "diagnosys" that has an error icon next to it. The image below shows two locations/possible error states.
Right-click on one of them and select Update driver.
Select Browse my computer to find the driver.
Navigate to C:\Multifocal. Make sure that "include subfolders" is turned on.
The following error may appear; if so, select Install this driver anyway.
You will need to repeat the driver installation steps 2-4 times. Repeat until all instances of Espion have the ! error icon cleared.