Launch QuickTime again and it should run as if it was installed on Windows 7.
Under compatibility mode, check the checkbox for Run this program in compatibility mode for, and then select either Windows 7 or Vista. Uninstall QuickTime Player from your Windows system if you havent already (also uninstall Media Composer if its already installed) Download the QuickTime. Download the latest version of QuickTime Player for Mac - For Mac OS X 10.6.3 Snow Leopard users only.
Get QuickTime Player alternative downloads. Trusted Mac download QuickTime Player 10.5. Once you’ve downloaded and successfully installed QuickTime onto your Windows 10 PC, right-click QuickTime from your desktop and then click Properties. See Use iCloud Drive to store documents on your Mac, iPhone, and iPad. If you run into compatibility issue such as freezing or other unknown bugs, you can try to run QuickTime in compatibility mode for Windows 7 or Vista. But it should work fine playing normal videos or musics. There is no guarantee that things will work perfectly as expected using the said QuickTime version on Windows 10, especially if you are to play some new formatted videos, it probably won’t work. If you install it on other later versions of Windows such as Windows 10, it may not work with full functionality and may not be able to play some of the latest videos. It has been working perfectly on these OS version. QuickTime 7 Windows version was last supported on Windows 7 and Vista.
