I am sure I was able to double click a crash dump file (*.dmp) file in explorer in my old PC and it will open up in WinDbg. In my new PC it doesn't open and gives an error.

Could not create process "c:\my-path\my-crash.exe.dmp". Win32 eror 0x193

%1 is not a valid Win32 application

The error is understandable because it is trying to open the dump file as executable. I need to provide -z flag to windbg to tell it to open it as dump file and I also need to enclose the file path in quotes. I have verified this on command line but how do I configure the double click to do that?

Again I am pretty sure I had this working on old PC that I no longer have.

  • You need to assoicate the .dmp file extension with windbg. I do not recomend you do that because windbg supports command line arguments. Its not designed to be associate with a file extension.
    – Ramhound
    Mar 28, 2017 at 20:06
  • @Ramhound I have done that, thats why it opens the dmp file but gives that error because of the reasons you described. But I know I had it working in the past, dont know how.
    – zar
    Mar 28, 2017 at 20:19

1 Answer 1


Andrew Richards explained this in his blog, some years ago. Open cmd in your install folder of Windbg and run WinDbg.exe -IA to register the file File Association. You can also use the provided reg file, but here you need to change the paths.

  • That did the trick but like the first comment on that post, I saw it was still not working when I ran windbg -IA because I had already manually associated .dmp file with windbg. I had to remove that by deleting the key below in registry editor and that fixed everything! HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\‌​Explorer\FileExts\.d‌​mp
    – zar
    Mar 29, 2017 at 17:30
  • It is documented here as well.
    – zar
    Apr 17, 2017 at 17:53

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