Keynote Quit Unexpectedly - Click Reopen To Open the application again.

The fix is straightforward. You simply need to update macOS to the latest version, currently Big Sur 11.4.

To do that go to System Preferences > Software Update.

Also make sure you are using the latest Pages, Numbers, and Keynote, currently 11.1. These can be updated, if necessary, through the Mac App Store.

SG

Same problem. There's many topics about this but apparently no solid fix that works everytime.

My problem occurs on a 2017 Macbook Pro. Updated Keynote after the problem occurred, restarted, nothing works. This is a huge problem for my work right now, costing me a large amount of time.

Not encouraging to see that this is a common problem for many years now.

I can confirm that updating MacOS entirely works! Thanks SGIII!

Why a bunch of documents suddenly stopped working for a bunch of people, will remain somewhat of a mystery.

For me it appears that the problem was related to fonts missing on my Macbook for this presentation. Another workaround is opening the document on iPad, opening the presentation, then tapping "resolve font issues" (which it automatically asked me if I wanted to do), then save. After re-opening on my Macbook the file worked once again. Tried this before updating my Macbook.

Only the iPad (and perhaps iPhone) version of Keynote has this function for some reason. On Macbook there's a way to replace fonts but it's all greyed out for me, even after updating everything.

I have the same situations.

Me too! I have many keynote docs; used it just last week. Today no go!

What did you find??

will we ever know? does Apple come discuss this with us?