Hi all I'm trying to get some tests of our application running on a GitHub actions runner with Windows Server 2022 as the OS.
If I use a version of our application with Qt 5.12, the application starts correctly. This Qt 5.12 was self-built using this configure command: c:\qtbuild512\qt\configure -confirm-license -make-tool jom -debug-and-release -force-debug-info -opensource -gui -widgets -no-qml-debug -skip qt3d -skip qtwebengine -skip qtwebview -nomake examples -nomake tests -no-sql-mysql -opengl desktop -mp -prefix C:\qtbuild512\install\win64 If I try to run our application built with a self-built Qt 6.5, the application won't start and exits with error code -1073740771. That error code is: 0xc000041d (NT: 0xc000041d STATUS_FATAL_USER_CALLBACK_EXCEPTION) -- 3221226525 (-1073740771) Error message text: An unhandled exception was encountered during a user callback. The configure command for this self-built Qt 6.5.1 is: ..\..\qt\configure -debug-and-release -force-debug-info -gui -widgets -nomake examples -nomake tests -trace etw -opengl desktop -prefix C:\qtbuild6_5\install\win64 If I use the same application with the official Qt 6.5.1 binaries for Windows, the application starts. If I remove just opengl32sw.dll, I get the same error message I get when using our self-built binaries, which do not include opengl32sw.dll. It's pretty clear to me that the official binaries are working because they include software rendering for OpenGL. Since the server likely does not have hardware based OpenGL, and our application links against opengl32.lib, it seems reasonable that the application would not start using our self-built Qt 6.5 that is configured with -opengl desktop. But what I don't understand is why the application runs with our Qt 5.12, which also has "-opengl desktop" in the configure command. FWIW our application is a widgets based application that uses QOpenGLWidget and related classes. Thanks for any insight you might have Adam
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