Unable to sync Calendar App after iOS 18 update

Hello Community.

I'm having issues with my iOS calendar app. Since the iOS 18 upgrade many of the events in the native calendar (including Outlook, Google, etc.) are not syncing. I've nearly missed meetings and appointments, because when I open the apple native calendar app half of them are not visible. Then, I have to go into the Outlook and Google work calendars to see missing appointments. Even some events in my apple / person calendar are not present on my apple iPhone 14 Pro Max and new iPad 11 Pro. Flipping through multiple apps to find appointments and events is definitely inconvenient, confusing, and disconcerting. This is very disappointing. Apple, please fix it before the arrival of my iPhone 16 Pro Max!!

[Re-Titled by Moderator]

iPhone 14 Pro Max, iOS 18

Posted on Oct 3, 2024 10:09 PM

Top-ranking reply

Kimowaggs

Level 1

44 points

Posted on Nov 21, 2024 2:20 PM

I finally figured it out! Go to settings- scroll to bottom and click on Apps. Click on the Calendar app. Click on Calendar Accounts to show all the accounts you have synced. Click on the first account that is not synching correctly. Toggle off the calendar. Let it delete (don’t worry it will just unsynch it). Then back out of settings. Repeat with all accounts that aren’t working. Restart your phone (not sure if necessary but I did this). Then go back into settings-Apps-Calculator-Calculator Accounts- and turn back on all the calendars for the accounts you turned off. They will take a bit to synchronize but worked perfect. FINALLLLLY!!!

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53 replies

jdzuegel

Level 1

8 points

Nov 12, 2024 3:07 PM in response to sward5

I have this same problem with my new iPhone 16 Plus using iOS 18.1. The calendar and email update prove variable, sometime okay but if often slow to never.

Kafkakat

Level 1

0 points

Nov 24, 2024 9:11 AM in response to sward5

I was afraid to delete my iCloud calendar but it worked! My calendar is repopulating

johncicc

Level 1

18 points

Dec 2, 2024 4:22 PM in response to Kimowaggs

May need to accept the terms of use for new update … should be in the account portion of the iPhone

Dec 3, 2024 1:18 PM in response to Kimowaggs

I tried this as well no joy nothing works. Apple refuses to look into this.

theatkos

Level 1

8 points

Dec 4, 2024 2:08 PM in response to sward5

I am having a similar issue. My husband and I have different accounts we share and none of them are syncing. Very frustrating as we are missing appointments

Dec 11, 2024 12:02 PM in response to Kimowaggs

Thanks Kimowaggs! That did the trick. Did not have restart my iPad either, but got my missing events back!

Dec 17, 2024 8:41 AM in response to sward5

I didn’t lose my events (thank goodness), but I’m no longer able to edit MY OWN events! Anyone else?

DreNic

Level 1

8 points

Jan 3, 2025 10:15 PM in response to sward5

Since Updating to 18.2, my calendar is now one day off. It shows all my entries for tomorrow, on today’s date. And it has two calendar dates for Friday Jan 2…

Unable to sync Calendar App after iOS 18 update