I've been having this problem for probably about a year now, and I have no idea why.

I like having a default calendar alert, and I do use them. However for many of my repeating calendar events, I don't want the default alert, instead wanting only to be notified at the time of the event, for example.

So on those events, I change the default alert value to "none", and when prompted if I want to save for all future events, I say yes.

If I then edit the event, I can confirm visually that the alert has been changed. I can quit Calendar, re-open it, and again confirm that the former default alert is now set to "none".

But then if the event is more than a couple of hours away (like the next day for instance), the default alert will be back. For all future events.

I do use iCloud calendars between my iMac (macOS Sierra), Macbook (High Sierra), and iPhone (iOS 11.3), and it doesn't matter which device I make the change on, it will always revert.

This is seriously annoying, does anyone know why this happens and how to fix it?

  • 2
    You're not alone. I have this exact same problem. Been dealing with it also for about a year. I thought it might be due to me adding other calendars and/or having multiple devices but that doesn't appear likely at this point. My trial/error points to a bug with ical on the Mac. Ugh!
    – BeeZee
    Jul 1, 2019 at 14:16
  • It is so incredibly annoying. I've resigned myself to it at this point and just try not to let my frustration get the better of me.
    – JVC
    Jul 1, 2019 at 14:17

1 Answer 1


UPDATE: Cancel all of this. I just realized today that all my default 1-hour alerts are again back on my desktop device calendars. However they are NOT back on my iPhone. iOS shows no default 1-hour alert, but macOS does on both laptop and desktop (High Sierra and Sierra, respectively). So I don't know if this is a bug in macOS Calendar or iCloud or what, but it's still driving me nuts. Original "answer" follows.

At the moment it appears I have finally solved this. Apparently I must not have tried changing all the alerts from my phone after all though I thought I had. Changing them from macOS simply did not work, but changing them all one by one from the phone, seems to have done the trick. This morning my usual alert at 9am that always would go off at 8am, did not. It went off at 9am as desired. So unless I find things revert back again... I'm going to call this the solution.

Change the alerts from an iOS device, not macOS.

  • The only solution I was ever able to find to this, was to remove the default alert in Calendar.app. Very disappointing since I like having a default alert, but being reminded 1 hour in advance of absolutely every single thing I ever put on my calendar, was just too much to bear.
    – JVC
    Sep 4, 2019 at 19:41
  • 1
    You can always delete an answer if it doesn't attempt to answer the question. also, edit your question for the updates.
    – anki
    Sep 4, 2019 at 20:26
  • This problem is so annoying. You should delete your answer, and maybe we should start a bounty.
    – Roberto
    Jan 30, 2020 at 20:11
  • I totally agree, it's infuriating. I'm not sure what a bounty would accomplish though? The few times I've ever done one it has resulted either in zero answers, or answers that did not actually solve the problem.
    – JVC
    Jan 30, 2020 at 20:12

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .