If the installer throws script execution errors mid-way through configuration, it usually means a conflicting network proxy is interfering with component registration. Block the installer using your Windows Firewall or run the machine strictly offline during setup. "DirectX/OpenGL Context Creation Failed"
: Right-click qt-opensource-windows-x86-5.15.2.exe → "Run as administrator." While Qt can run without admin, it writes to C:\Qt by default, which requires elevated privileges. qt-opensource-windows-x86-5.15.2.exe
Inside the installed Qt folder: C:\Qt\Docs\Qt-5.15.2\qt5\index.html → “Release Notes” Or online archive: Qt 5.15.2 Release Notes (Qt’s archived documentation) If the installer throws script execution errors mid-way