Two weeks ago, Apple released iMovie 10.1.7, which suddenly requires macOS 10.12.2 (previously it only required 10.11.2).
Unfortunately, my Mac, while perfectly capable of doing everything else I want, is stuck on 10.11, and now I want to use iMovie.
Is there any way to get an official copy of iMovie 10.1.6?
Best Answer
Get iMovie 10 via iMovie 9
It turns out that if you have iMovie 9, the App Store will allow you to upgrade to iMovie 10 without the normal checks.
I'm running macOS High Sierra 10.13.6 and the App Store just let me upgrade iMovie a moment ago.
Get iMovie 9
Get iMovie 10
Go into the App Store, see that the option now says "Upgrade".
In case when you can not upgrade iMovie because of information: "your system can not meet minimum system requirements" :
Notes
I don't know if this is perfectly reproducible, but I know that I just did it and it worked on my machine.
Some things that may or may not be important (i.e. I may have triggered a glitch mode):
I hope that helps and it's not just me.