Qt-opensource-windows-x86-5.15.2.exe

Even with a successful install, you might hit these issues:

Includes over 170 bug fixes compared to previous 5.15 versions. qt-opensource-windows-x86-5.15.2.exe

(not just web docs):

This is the tricky part. You cannot easily find this file on the official Qt website anymore. The official site pushes the Qt Online Installer (which requires an account) or newer Qt6 versions. Even with a successful install, you might hit