Datakey Series III Programmer Driver Installation Issues

Q: I am having trouble with the driver for the Datakey Series III programmers (e.g. SlimLink III, KeyLink III, etc.). What are the troubleshooting steps?

A: Below is the list of troubleshooting steps if you are having issues with the drivers for the Datakey Series III programmers.

1. Download the latest driver. The latest signed drivers can be downloaded here.
   
2. Some customers have reported getting a Code 39 error during driver installation. This may be due a Microsoft tool called Device Guard. If you are getting a Code 39 error, check with your IT department if your computer is using Device Guard and if the following features can be disabled:
   1. Disable "Hypervisor-Protected Code Integrity"
   2. Disable "Device Guard"
      
      The tool for disabling these features can be found on Microsoft's site:
      https://www.microsoft.com/en-us/download/details.aspx?id=53337
3. Another issue that can prevent the driver from loading is due to a compatibility issue with another Windows security feature. Check with your IT department to see if Memory Integrity can be turned off for the computer using the Datakey Series III programmer.
   
   The following page on the Microsoft website provides the instructions on how to turn Memory Integrity off in the Core Isolation page of Windows Security:
   https://support.microsoft.com/...

We are looking into updating our Series III programmer drivers to see if these compatibility issues can be eliminated.

If you are still having driver installation issues after trying the applicable troubleshooting steps above, please contact Datakey Customer Care for further assistance.