There are other websites that describe this in detail. You will still need to do a trick by not using the regular installer, but do a custom install. If this is about other software suggesting to install QuickTime for its own codec support, then you can install just the “Essentials”, without the Player software.If you are going to install it against advise, you will have to perform some tricks on later Windows versions.

About QuickTime 7.7.9 for Windows - Apple Support OS

Apple stopped developing QuickTime for Windows in 2015, and advises users to uninstall it. QuickTime Player 7 was for Windows 2000, XP, Vista and 7.

The new QuickTime Player not only delivers crisp quality, but the app is easy to use with a simple interface. Apparently you do not have a running version of QuickTime Player there, from which you can access its menu. Download Latest Version for Windows QuickTime Player, from Apple, allows the playback of QuickTime movie files (.mov) and lots of other file formats including, audio, still images, graphics, and virtual reality (VR) movies.

Update quicktime player windows