Driver error - Code 39

Note: This issue has been fixed in version

If the latest Windows 10 version (April 2018 Update, Redstone 4, Build 17134), has been fresh installed (not updated), our drivers will not work in some cases.

In Windows Settings > Devices you might see a Driver error.


To verify Code 39 open the Windows Device Manager and double click on the device.

DeviceManager Code39

Until we've fix this you need to disable a new Windows security feature called Memory integrity to make our drivers work.

  • Open Windows Settings
  • Select Update & Security
  • Select Windows Security
  • Click on Open Windows Defender Security Center
  • Select Device security
  • Click on Core isolation details
  • Turn Off Memory integrity
  • Restart your computer

We welcome this new security feature in Windows 10.