That's too much informations. The VHD creation is just a wrapper for windows' diskpart.exe. Anyway there should be some error printed in the black window. Also WinNTSetup should give back the error code and it's description. Sorry,my OS is win8 enterprise x64 Chinese (Simplified). when creat VHD ,this error pop-up. If I switch display language to english(I install english language pack just now for creating a bug report in english ), But creat VHD ok,no error. so,the bug report is still in chinese.