Hello, I'm trying to accomplish DTM tests on my virtual microphone driver based on msvad. I'm testing it under Win7 x64 OS. Round Trip Test – Win 7 (Manual) failed due to child job failure - LibJob – RoundTrip Test (Manual) ERROR: No loopback detected. KS Position Test – Win 7 ERROR: The current device supports neither standard streaming nor standard looped streaming – need to support at least one; The similar problem is being discussed here //www.freelists.org/post/wdmaudiodev/DTM-test-case-Wave-Test-failed-because-my-microphone-driver-does-not-support-neither-standard-streaming-not-standard-looped-streamingand it looks like a bug in the tests; KS Topology Test – Win 7 LibJob – KS Topology Test – Win7 ERROR: Node KSNODETYPE_VOLUME – Property KSPROPERTY_AUDIO_CPU_RESOURCES: Node must not support this property descriptor Wave Test ERROR: The current device supports neither standard streaming nor standard looped streaming – need to support at least one; I guess it can be related to the 1st and 2nd paragraph. General Audio Test (I) – Win 7 I also received lots of errors concerning the KSPROPERTY_AUDIO_MUTE and KSPROPERTY_AUDIO_VOLUMELEVEL. The fact that I don't understand is - the MSVAD from my latest WDK has the same errors! And winqual_at_microsoft.com told me that I shouldn't create a submission with failed tests.. So, should I fix all these errors? My driver works fine, but I'm afraid the submission will fail and I will lose money. Please, advise what to do in this situation. Thanks.