Found out this is a known bug: https://bugreports.qt.io/browse/QTBUG-136493

@massi_z said in Building Qt 5.15.0 for android on windows failed: Is Qt releasing prebuild version right now? Yes, you can install Qt for Android using online installer (or Qt Maintenance Tool if Qt is already installed).

@SGaist said: Android Hello all, Sorry for the late reply As SGaist said i was able to build and run qt with opencv successfully on windows desktop using mingw for desktop bundled with qt for android Thanks Amal

Hi and welcome to devnet, It's not the only choice but the most flexible. To see the other you have to click on the "View all downloads" link