Hi Gaurav: This is HCK's problem. I remember there is an Errata for this. You need download Errata filter and installer it on you DTM server. Then you can find this will change to pass. ________________________________ 寄件者: Gaurav Khuntale <gauravkhuntale@xxxxxxxxx> 收件者: wdmaudiodev@xxxxxxxxxxxxx 寄件日期: 2014/1/24 (週五) 2:17 PM 主旨: [wdmaudiodev] Need help in FAIL: Failed WriteData(Render)/ReadData(Capture) to see if pin position is moving or not Hello, I am working on a virtual audio driver which is based on WaveCyclic miniport driver. During Wave Test my driver failing in following test case, "Standard Streaming\Rendering Pin Tests\Reset Pin while streaming data". Log file shows following message, Successfully instantiated KSPIN_DATAFLOW_IN pin Submitting 16000 bytes to the pin KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_STOP; want it to be in state KSSTATE_PAUSE Setting KSPIN_DATAFLOW_IN pin to state KSSTATE_ACQUIRE Setting KSPIN_DATAFLOW_IN pin to state KSSTATE_PAUSE Submitting IOCTL_KS_WRITE_STREAM IRP ... IRP is pending... KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_PAUSE; want it to be in state KSSTATE_RUN Setting KSPIN_DATAFLOW_IN pin to state KSSTATE_RUN Position reported before issuing KSRESET_BEGIN = 121 bytes KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_RUN; want it to be in state KSSTATE_RUN Resetting Pin state: IOCTL_KS_RESET_STATE (KSRESET_BEGIN) Position reported after issuing KSRESET_BEGIN = 0 bytes Submitting IOCTL_KS_WRITE_STREAM IRP ... GetLastError did not return ERROR_IO_PENDING even though the pin is paused [ GetLastError() returned 21 (0x15) - The device is not ready. ]. FAIL: Failed WriteData(Render)/ReadData(Capture) to see if pin position is moving or not. Can anyone please help me in finding where exactly i can check in my driver for above failure ? Thanks.