Hi,
You can check by looking at the following registry key in regedit :
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity
The problem occurs when the "Enabled" field has value of 1. To fix, change the value of "Enabled" field of this key to 0, and then reboot. The LPC DFU driver will then load successfully, and then, after the probe has been booted by the IDE, the LPC-Link driver installs correctly - and then debug the LPCXpresso V1 board successfully.
The following article gives more background information on this:
https://borncity.com/win/2018/07/06/windows-10-v1803-hcvi-causes-driver-error-code-39/
Have a great day,
Sol
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