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The dreaded 0xc000007b error

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  • R Offline
    R Offline
    rjmx
    wrote on last edited by
    #1

    I had my app almost running: it brought up the main window fine, but there was a problem: it crashed when I tried to invoke anything using GpgME. I started to try to compile the app under Visual Studio, but gave up and went back to mingw64. Except now, when I try to run it, it immediately comes up with an error:

    The application was unable to start correctly (0xc000007b). 
    Click OK to close the application.
    

    Researching this turns up suggestions that it's possibly linking in a 32-bit DLL or something, but I don't see where. All of the DLLs compiled for it are X86-64 (confirmed by Cygwin's "file" command).
    Any suggestions on how to troubleshoot this thing? I don't have a lot of recent experience on the Windows platform. I there anything like Linux's "strace" command?

    Thanks,

    .....Ron

    jsulmJ 1 Reply Last reply
    0
    • R rjmx

      I had my app almost running: it brought up the main window fine, but there was a problem: it crashed when I tried to invoke anything using GpgME. I started to try to compile the app under Visual Studio, but gave up and went back to mingw64. Except now, when I try to run it, it immediately comes up with an error:

      The application was unable to start correctly (0xc000007b). 
      Click OK to close the application.
      

      Researching this turns up suggestions that it's possibly linking in a 32-bit DLL or something, but I don't see where. All of the DLLs compiled for it are X86-64 (confirmed by Cygwin's "file" command).
      Any suggestions on how to troubleshoot this thing? I don't have a lot of recent experience on the Windows platform. I there anything like Linux's "strace" command?

      Thanks,

      .....Ron

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #2

      @rjmx You can use https://www.dependencywalker.com/ to check whether any dependency is missing.

      https://forum.qt.io/topic/113070/qt-code-of-conduct

      R 1 Reply Last reply
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      • jsulmJ jsulm

        @rjmx You can use https://www.dependencywalker.com/ to check whether any dependency is missing.

        R Offline
        R Offline
        rjmx
        wrote on last edited by
        #3

        @jsulm Thanks. Actually, that's a bit old now. A suitable replacement is at https://github.com/lucasg/Dependencies.

        I see a couple of missing dependencies, but they seem to be optional from what I can see. There's a lot of stuff to drill down, so I haven't seen all of it, but I'll try again.

        R 1 Reply Last reply
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        • R rjmx has marked this topic as solved on
        • R rjmx

          @jsulm Thanks. Actually, that's a bit old now. A suitable replacement is at https://github.com/lucasg/Dependencies.

          I see a couple of missing dependencies, but they seem to be optional from what I can see. There's a lot of stuff to drill down, so I haven't seen all of it, but I'll try again.

          R Offline
          R Offline
          rjmx
          wrote on last edited by
          #4

          @rjmx Found the missing DLL. Problem solved.

          1 Reply Last reply
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