You downloaded it, but it won't work. Here are the fixes.
Error 1: "iMovie 10.3.3 is damaged and can’t be opened." imovie 1033 dmg new
Error 2: "You do not have permission to open the application." You downloaded it, but it won't work
Error 3: Missing "Magic Movie" or "Storyboard" templates. Error 2: "You do not have permission to open the application
As of 2026, iMovie 10.3.3 is now five years old. Apple has moved on to iMovie 10.6 and is rumored to be integrating AI storyboarding. However, the community of users clinging to iMovie 1033 dmg new is substantial:
The "new" in the search query is telling: users don’t want a stale, outdated app. They want the newest possible version that doesn’t break their hardware. For millions, that is 10.3.3.
If you have iMovie 10.4 or later installed, you cannot install 10.3.3 over it. You must delete the newer version first.