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The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.

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  • N NatK

    How the does an installer from 2021 still not install things properly for the Windows desktop kits like MSVS2019 or MinGW.. the built exe doesn't even work because it is missing Qt6Core.dll ... why isn't that file moved into the build directory?

    KroMignonK Offline
    KroMignonK Offline
    KroMignon
    wrote on last edited by KroMignon
    #3

    @NatK said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

    why isn't that file moved into the build directory?

    I cannot understand what you want to achieve, what you have done and why you got this error.

    I guess, you have build your project and then tried to launch the executable directly, which can not work!

    Why, because Qt-Creator is smart and don't c opy all Qt DLL into build directory, but set environment variables before launching the application. So it will not blow up your disk with multiple copies of same files!

    It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

    1 Reply Last reply
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    • N Offline
      N Offline
      NatK
      wrote on last edited by
      #4

      And how to distribute the compiled exe? surely it must come with all the required .dll files then no?

      KroMignonK 1 Reply Last reply
      1
      • N NatK

        And how to distribute the compiled exe? surely it must come with all the required .dll files then no?

        KroMignonK Offline
        KroMignonK Offline
        KroMignon
        wrote on last edited by
        #5

        @NatK said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

        And how to distribute the compiled exe? surely it must come with all the required .dll files then no?

        By using deployment tool ==> https://doc.qt.io/qt-6/windows-deployment.html

        It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

        D 1 Reply Last reply
        3
        • nageshN Offline
          nageshN Offline
          nagesh
          wrote on last edited by
          #6

          as @KroMignon suggested

          windeployqt <path-to-app-binary>
          

          this will copy the necessary files to application directory and makes it ready to deploy.

          1 Reply Last reply
          0
          • EndrII 0E Offline
            EndrII 0E Offline
            EndrII 0
            wrote on last edited by
            #7

            You need to deploy your application.
            I use the cqtdeployer tool for solve this issue.

            Examples of using available here, here and here

            You can download this deploy tool from github releases or snap store if you use Linux systems.

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            • KroMignonK KroMignon

              @NatK said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

              And how to distribute the compiled exe? surely it must come with all the required .dll files then no?

              By using deployment tool ==> https://doc.qt.io/qt-6/windows-deployment.html

              D Offline
              D Offline
              DevWinDemon
              Banned
              wrote on last edited by
              #8

              @KroMignon said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

              By using deployment tool ==> https://doc.qt.io/qt-6/windows-deployment.html

              this thing doesn't opens. And why I need to open some other exes like this and trying to find how to use it, instead of just sharing exe directly from debug folder like it was in 5.15.16 version?

              Pl45m4P 1 Reply Last reply
              0
              • D DevWinDemon

                @KroMignon said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

                By using deployment tool ==> https://doc.qt.io/qt-6/windows-deployment.html

                this thing doesn't opens. And why I need to open some other exes like this and trying to find how to use it, instead of just sharing exe directly from debug folder like it was in 5.15.16 version?

                Pl45m4P Online
                Pl45m4P Online
                Pl45m4
                wrote on last edited by Pl45m4
                #9

                @DevWinDemon said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

                this thing doesn't opens

                Did you click it?! It's a CL tool ;-)

                And why I need to open some other exes like this and trying to find how to use it, instead of just sharing exe directly from debug folder like it was in 5.15.16 version?

                Because that's not how it works... programs depend on other libraries (in general). You link Qt dynamically to you app... on your computer and in your IDE environment the paths are set in order to locate the Qt libs.
                If you move your app binary without deploying it properly with all its dependencies and your friends want to start it, it won't be able to find the libraries.
                Next, you don't share debug versions just like that :) Build in release, deploy it properly and ship it with all dependencies (Qt and other 3rd party, you might need).
                Don't blame the computer or Qt, if you don't know better :)


                If debugging is the process of removing software bugs, then programming must be the process of putting them in.

                ~E. W. Dijkstra

                D 1 Reply Last reply
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                • Christian EhrlicherC Christian Ehrlicher

                  @NatK said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

                  why isn't that file moved into the build directory?

                  Because it must not be there.
                  Make sure you properly set up your environment so the path to this library is in your PATH

                  S Offline
                  S Offline
                  servant 0
                  wrote last edited by
                  #10

                  @Christian-Ehrlicher yup, that was my problem; needed to add C:\Qt\Qt-6.8.3\bin to my PATH environment variable; thank you!

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                  • Pl45m4P Pl45m4

                    @DevWinDemon said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

                    this thing doesn't opens

                    Did you click it?! It's a CL tool ;-)

                    And why I need to open some other exes like this and trying to find how to use it, instead of just sharing exe directly from debug folder like it was in 5.15.16 version?

                    Because that's not how it works... programs depend on other libraries (in general). You link Qt dynamically to you app... on your computer and in your IDE environment the paths are set in order to locate the Qt libs.
                    If you move your app binary without deploying it properly with all its dependencies and your friends want to start it, it won't be able to find the libraries.
                    Next, you don't share debug versions just like that :) Build in release, deploy it properly and ship it with all dependencies (Qt and other 3rd party, you might need).
                    Don't blame the computer or Qt, if you don't know better :)

                    D Offline
                    D Offline
                    DevWinDemon
                    Banned
                    wrote last edited by
                    #11

                    @Pl45m4 said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

                    Because that's not how it works... programs depend on other libraries (in general). You link Qt dynamically to you app... on your computer and in your IDE environment the paths are set in order to locate the Qt libs.
                    If you move your app binary without deploying it properly with all its dependencies and your friends want to start it, it won't be able to find the libraries

                    I work 2 years like this on qt 5.15.16, my friends could easily open all my apps with no other libraries or different things like this. And now qt requires some libraries while the older version has it!!! I could just tap "run / build" button and everything is done perfectly. Now I'm very upset as new qt has problems like this library dependances. Qt developers is downgrading their software if it will continue this way, I think in a few years the users will need to install full qt creator on their computer to run any application built on qt

                    Christian EhrlicherC 1 Reply Last reply
                    0
                    • D DevWinDemon

                      @Pl45m4 said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

                      Because that's not how it works... programs depend on other libraries (in general). You link Qt dynamically to you app... on your computer and in your IDE environment the paths are set in order to locate the Qt libs.
                      If you move your app binary without deploying it properly with all its dependencies and your friends want to start it, it won't be able to find the libraries

                      I work 2 years like this on qt 5.15.16, my friends could easily open all my apps with no other libraries or different things like this. And now qt requires some libraries while the older version has it!!! I could just tap "run / build" button and everything is done perfectly. Now I'm very upset as new qt has problems like this library dependances. Qt developers is downgrading their software if it will continue this way, I think in a few years the users will need to install full qt creator on their computer to run any application built on qt

                      Christian EhrlicherC Online
                      Christian EhrlicherC Online
                      Christian Ehrlicher
                      Lifetime Qt Champion
                      wrote last edited by Christian Ehrlicher
                      #12

                      @DevWinDemon said in The code execution cannot proceed because Qt6Core.dll was not found. Reinstalling the program may fix this problem.:

                      I work 2 years like this on qt 5.15.16

                      Nobody hinders you to make it work the same with Qt6 - simply put it in the PATH env var as you did for Qt5.
                      Please stop insulting people for things neither we nor Qt can do against - that's how a library search path on windows works (and also on linux there is a similar thing). So learn on how library search is working on your platform.
                      But maybe your russia os has a better solution for this...

                      Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                      Visit the Qt Academy at https://academy.qt.io/catalog

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