There is no application set to open the document “RemindersSharingExtension.appex”.

[kirbyrun]

I get the error message shown in the title when I click on a Reminders notification. No idea what the heck to do about it and Google brings me nothing. Anyone else experience this and have a fix?

 

[BrianBaughn]

That's a wonky one. I don't know.

I just navigated to that file via /System/Applications/Reminders.app/Contents/PlugIns/RemindersSharingExtension.appex (right click Reminders app and select "Show Package Contents") and did a "Get Info" on it. "Open with:" says "Quick Look Simulator".

 

[kirbyrun]

That's a wonky one. I don't know.

I just navigated to that file via /System/Applications/Reminders.app/Contents/PlugIns/RemindersSharingExtension.appex (right click Reminders app and select "Show Package Contents") and did a "Get Info" on it. "Open with:" says "Quick Look Simulator".

Hmm. When I "Get Info" on that plugin, it says "Terminal (default)." And it says the same for the other three plugins in that package.

Weird.

 

[BrianBaughn]

I don't know what to advise other than reinstalling macOS on top of your current system. None of your data or settings will change and it should fix that and anything else that might be screwy.

 

[kirbyrun]

I don't know what to advise other than reinstalling macOS on top of your current system. None of your data or settings will change and it should fix that and anything else that might be screwy.

Yeah, I was thinking I might do that. Or since it’s not a huge problem, I might wait to see if the next Monterey update fixes it.

Thanks for your help!

 

[BrianBaughn]

Yeah, I was thinking I might do that. Or since it’s not a huge problem, I might wait to see if the next Monterey update fixes it.

Thanks for your help!

It may not as the update could skip that completely.

 

[bogdanw]

when I click on a Reminders notification.

Have you tried turning it off and on again?
The Reminders notifications from System Preferences – Notifications

 

[kirbyrun]

Have you tried turning it off and on again?
The Reminders notifications from System Preferences – Notifications

Hmm. That might have done it! (The error didn't happen EVERY time, just most times. But I haven't seen it since trying your advice. Thanks!)

 

[Serzenn]

I've been having the same issue since Monterey. Thought that maybe Ventura will solve the issu, but nothing happened. Have you solved your problem?

 

[NotMyCupOfTea]

Any solution to this?

 

[bogdanw]

Any solution to this?

According to @kirbyrun, turning off Reminders notifications in System Preferences – Notifications, then turning them on again, might have solved the problem.

 

[kirbyrun]

According to @kirbyrun, turning off Reminders notifications in System Preferences – Notifications, then turning them on again, might have solved the problem.

Chiming in to report that it does seem to work. I had the issue recur and did the same thing and everything is working again. (Just tested it in 13.4.1.)