If you see Minecraft failed to download file, The file contents differ from what was expected in Minecraft launcher, use these fixes ...

Second solution: Install Minecraft in Compatibility Mode. Compatibility mode is a system interface that lets you run a program using the settings from an earlier version of Windows.

Many Minecraft players seem to be bothered by the Java(™) Platform SE binary error. It can lead to the game freezing midway or not even starting up.

Specifically, the "install" button remains stuck on "waiting on install" without the launcher downloading the necessary game files/folders.