Installation and Deployment

When you deployed your app use windeployqt and don't copy something around by yourself. Also make sure no other Qt installation is in your PATH env later on. Is in C:/MyApp/Release/ an 'imageformats' folder with the svg plugin?

Copying Axel's answer from https://forum.qt.io/topic/163746/cannot-access-https-code.qt.io-yocto-meta-qt6-connection-refused/6 code.qt.io is under a persistent DDOS attack. At this moment, the situation is under control and it should work normally. Access to large repositories remains limited.

@TN_robot Please post the actual error...

See this Wiki page. There's nothing more to install but yes, starting from the command line is easier.

The reason is that GitHub just zips the content of the repository. The official archives are ready to configure/build for the platform selected (.zip for Windows and tar.gz for unix like).

Sometimes you have bugs in one architecture and not the others. It might also just be a subtle difference in you settings, etc.

@Christian-Ehrlicher Ok, I got it. I will look into the source code and try to fix the warnings.

@Mucip said in Library problem: libxcb-cursor0 libxcb-cursor-dev: I applied below code and result. But in this case error message did not appeared?! The installer itself does not need libxcb-cursor. It was trying to warn you that your Qt-based projects might not be able to find it. I don't know why you might get that warning message if you've already installed the libraries. But as @JonB suggests, you might not need libxcb-cursor anyway since your system is using Wayland.

@akshaybabloo From the page you linked: "To get the Qt essentials package content with, for example, the MSVC 2022 binaries, use the corresponding qt6.10.0-msvc2022-essentials alias package."

solved i reset my password from qt installer

@new_ said in QT online installer v5-15 not available: qt5.15.16 is not download？ No, it is only provided as source code: https://lists.qt-project.org/pipermail/announce/2025-October/000592.html (Note also that Qt 5.15.18 has been released under open-source licenses)

I face the same issue. Did you create an Qt Bug? I skipped the SBOM generation with -DQT_GENERATE_SBOM=OFF

@major_tom3 hi, That's surprising that you have to create that symlink manually. Usually the package manager does that for you on installation.

Encountered this same issue on x86_64 with Qt6.8 (from Conan) with the following settings: [settings] arch=x86_64 compiler=gcc compiler.libcxx=libstdc++11 os=Linux compiler.version=11 compiler.cppstd=23 OpenGL dev package is already installed via: sudo apt-get install build-essential libgl1-mesa-dev

So, my problem was that Mesa installed from repository and it was fixed by adding -no-sbom in configure

@JonB said in deploying from Visual Studio - options to windeployqt: He is saying there is an option to windeployqt I was still asleep :) qt_generate_deploy_app_script() takes DEPLOY_TOOL_OPTIONS where you can pass it. If there is an ui element in the VS Addin - don't know, don't use this.