HLK Testing - "DriverSetup" is not a registered WDTF system interface name

Hi all,
Next up in the list of HLK testing errors to fix in the attempt to pass my usbser ref'ed driver: "Reinstall with IO Before and After (Reliability)"

The error is:

WDTF_TARGET : "DriverSetup" is not a registered WDTF system interface name. Win32=2 - The system cannot find the file specified.

Some searching the net for similar problems suggested running RegisterWDTF.
Doing so on the Win11 test machine which gives the result:

C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime>RegisterWDTF.exe
This version of WDTF is compatible with Windows Build 26100.
-Delete registry state.
-Get registry path.
-Register COM DLLs.
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\Deprecated\DeviceManagement.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\DeviceSupport\WDTFDeviceSupportAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\DrvPkgLibExt.dll".
      Not a COM DLL

   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\EDT\WDTFEDTAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\IoSpy\WDTFIoAttackAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\IoSpy\WDTFIoReplayAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\IoSpy\WDTFIoSpyAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\SimpleIO_D3DTest.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFAnySimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFAudioSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFBluetoothSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFCDROMSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFHidGenericSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFKeyboardSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFMobileBroadbandSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFMouseSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFMUTT2STRESSSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFMUTT2TCDSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFNetworkSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\wdtfsensorsiosimpleioaction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFVolumeSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFWebcamSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFWirelessSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimpleIO\WDTFWPDSimpleIoAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\SimulatedBattery\WDTFSimulatedBatterySystemAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\System\WDTFSystemAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFConcurrentIOAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFCpuUtilizationSystemAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFDriverPackageAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFDriverSetupDeviceAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFDriverSetupSystemAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFDriverVerifierSystemAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFFuzzTestAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFFuzzTestIoctlAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFInterfaces\WDTFInterfaces.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFPNPAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\Actions\WDTFSUPAction.dll".
   Process "C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime\WDTF.DLL".
-Register .NET Interop assemblies.
WDTFRegAsm.exe should only be called by RegisterWDTF.exe.
Run RegisterWDTF.exe instead.
   ERROR:
   ERROR: Failed to add managed assemblies to the GAC.
   ERROR: You can skip gac installation by using the "/nogacinstall" command line argument.
   ERROR:

ERROR:
ERROR: One of the registration steps FAILED! Please review!
ERROR: WDTF will not function correctly in this state!
ERROR: Possible permissions issue or incorrect processor architecture (x86 vs x64)
ERROR:

C:\Program Files\Windows Kits\10\Testing\Runtimes\WDTF\RunTime>

Thanks once again!

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