Odd calendar behavior in Sierra

Since upgrading to Sierra I've noticed several bugs in the Calendar app:


  • Whenever I open the app, it always says "Importing Calendar Data".
  • Events I have already accepted re-appear in the notification area all the time. Sometimes I have to accept or OK an event a dozen times before it goes away.
  • For some bizarre reason the calendar always opens to the week of November 6th. This happens on two macs that I use. There is nothing unusual about that week, I have no idea why this keeps happening.


Let me know what you think. Thanks.

Posted on Oct 21, 2016 2:17 PM

Reply
10 replies

Oct 22, 2016 11:55 AM in response to flarosa

Hello and welcome to Apple Support Communities, flarosa.

If I’m understanding you right, you're having several issues with Calendars since upgrading your Mac to Sierra: Calendars showing it's "Importing Calendar Data" upon opening the app, accepted events reappearing as if you didn't accept them, and your calendar defaulting to November 6th. I rely very heavily on the Calendars app on my own Mac, so I can certainly understand the importance of having it working correctly. I'm happy to help you get yours sorted out.

I recommend starting with the steps under the "Try these first" section in Get help using iCloud Contacts, Calendars, or Reminders , as well as the steps listed under the "macOS" section. Test out your Calendar app after trying those steps. If the issue persists, try some additional steps that will help troubleshoot the issue, and isolate it too. This includes testing out the Calendar app while booted in safe mode, and testing it out while logged in to a new user account.

You can find steps on how to create a new admin user account in macOS Sierra: Set up users, guests, and groups on your Mac . If the issues don't happen in a new user, then boot your Mac into safe mode using the steps in macOS Sierra: Start up in safe mode . Just to let you know beforehand, while in safe mode some features are not available, accelerated graphics are disabled, and certain software, kernal extensions, and login/startup items are prevented from starting up. Because of this, your Mac may run a lot slower than normal; this is expected behavior. After you have tested the Calendar app in safe mode, restart your Mac like normal and test out the app again. If you continue to have the same issues, reply back answering the following:

  1. Are your calendars synced with iCloud and/or anyplace else?
  2. Did the issue persist in the new user account?
  3. Did the issue persist while booted in safe mode?
Thanks for using Apple Support Communities.

Take care.

Dec 3, 2016 11:51 AM in response to Corrie84

Hi, I have the same issue - OS Sierra, new mac book pro. The calendar has the same odd behavior: (1) "importing calendar data" on every restart of the app, (2) notifications i already accepted re-appear as new (+ number re-appears on application icon in dock), (3) the calendar goes back to another date - not today.


Followed the steps you suggested - answers to your questions:

1. yes icloud and 2 other google accounts

2. no issue when i opened a new test account. the calendar was linked to icloud and worked fine on re-start.

3. yes, when i tried safe mode with my current user the issue persists.


Let me know what I can do to solve it... almost I wish I could simply re-install the calendar app.

Dec 8, 2016 4:11 AM in response to flarosa

A customer got the same issues on Sierra 10.12.1.

"Import Calender" at start, jumps into week number 45, calendar invitations not working correct.

In this week there is an invitation I can't delete and always appear for this Mac user in calendar app and got synced to iCloud. With the same account on a different Mac user it does not happen.


Tried to delete calendar caches, removed calendar account and readded, but nothing changed.


Besides iCloud, Google account is used.

Dec 8, 2016 9:36 AM in response to I prefer pears

Unfortunately it didn't work for me. And now there is this new event that I cannot delete. I'm using ical often with 3 different calendars and it's a real distraction. Assuming you work at Apple - would you mind if we discuss this offline? It sounds like you invested some time in this already so we could jump right in. I did try a lot of things including removing cache files and the spotlight method you suggested to no avail.

Dec 16, 2016 6:21 AM in response to georgefin

Tried everything, including re-installing the full system on the mac pro. Been on calls with Apple for hours. Tried also to delete the "rogue" events from the library (through spotlight). It helped to get rid of them but not of the repeated notifications and importing data on restart.


The only thing that seemed to work was creating a new user but I didn't want to go there.


So ended up replacing iCal with one of the solid 3rd party solutions out there that were recommended. I'm on a trial period, it will cost me $30 but since then I am a happy man.

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Odd calendar behavior in Sierra

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