iMovie app on mac os 10.15.7

Try this procedure:

To update/redownload iMovie 10, sign in to the app store and open your purchases folder by clicking on your name at the bottom of the app store side bar. You will see your purchases displayed, including iMovie 10. Redownload/update iMovie from there.

-- Rich

It might be that iMovie has simply been hidden. At the top of your app store Account page there is an item called View Information. Click on that.

When you click on it, a new window will open and you will see a heading called Hidden items, giving you the option to unhide any hidden apps. Try that and see if it works.

-- Rich

With the version of iMovie on my iMac the 7.1.4 that came with the original software suite and has never been opened since, I've now managed to download, from a third party website, iMovie 10.1.12, which has installed and opened fine and which I'll try for the small bit of editing I want to do. Thanks for your advice.

I’d like to do small bit of editing on a video taken on an iPhone and sent to me as an attachment. When I click on the version of iMovie installed years back on my iMac, I get the message it needs to be updated. When I try to download the current version of iMovie, I get the message it needs macOS 11.5.1 or later. My late 2012 A1418 iMac is on macOS 10.15.7, as updated as it will go. So macOS 11.5.1 is out of my reach.

What can I do? And if iMovie is just no longer accessible to me on my iMac, what alternative simple editing software would anyone recommend?

The procedure described in my first post in this thread, and the following posts, will get you the highest iMovie version that your current operating system will run. This assumes that you are trying to update from an earlier version of iMovie 10.

-- Rich

Interesting. I didn't know that iMovie 10.1.12 would run on Catalina.

-- Rich