HCK failed with Failed to open the EDT device

Question

We have a software-only KMDF driver (initialized with WdfDriverInitNonPnpDriver) that fails the HCK with the following test both on windows 7, windows 8 and windows 8.1:

 - DF - PNP Cancel Remove Device Test (Certification)
 - DF - PNP Cancel Stop Device Test (Certification)
 - DF - PNP Surprise Remove Device Test (Certification)

The log shows an error code on "WDTF_PNP : Failed to open the EDT device Win32=2" or "WDTF_PNP : Result: Failed to open EDT devices. ( 80070002 ). ".

filter have already update to the latest on here.

I notice that if I update filter to the older one, and change time on pc before 2023-01-31, the error can be filter to success.

I think this is maybe not the issue of driver, so request help here.

Answer 1

I recommend you to test it on Windows 10 and HLK and latest Filter environment first. Because the test environment is constantly being updated. Regarding the evaluation in Windows 8.1 and other environments, why not consider it after passing Windows 10?

Answer 2

Hi, I am having similar issue - the same 3 tests are failing for me.

Looks like the filters are correctly applied for Windows 10 certification (HLK), but not for Windows 8.1 certification (HCK).