Last updated: October 2024. Verified links and checksums.
If you have a paid license, you can access the full offline installer directly through the Qt Account Portal. download qt 5.15.2 offline installer
If you must have a completely offline setup without a commercial license, you can download the and build it manually. Last updated: October 2024
You can download the Qt 5.15.2 offline installer directly from the Qt Account portal . download qt 5.15.2 offline installer
Once you have successfully downloaded qt-opensource-*-5.15.2.* , treat it as a precious artifact. The Qt Company occasionally purges older versions from the main archive to save bandwidth.