calendar events gone after iOS 17.4 update

I was feeling frustrated after reading through these posts but I found this reply on the MS 365 Community and followed the pink highlighted steps (the last one wasn't needed). It worked for me-my calendars are syncing both ways again! Hope this can help others.

I’ve had multiple hour long conversations with Apple and it can’t be fixed. The only way I can see what’s in my calendar is to go to privacy.apple.com and get a copy of it. It doesn’t come loaded on a calendar it is just typed out. When it asks how much I suggest the 25 so you can get as much data back as possible. It can take up to several days. I chose the 5 at first and it took 2 days. It only had from when I got my iPhone through all of 2014 then the new stuff I’ve added since the whole thing crashed.

iOS updates aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. Calendar issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors. This could be a pure coincidence that the iOS update affected the iPhone calendar event functions.

Before initiating a standard iOS update, it's advisable to create a backup. Have you completed this step? If yes, proceed with the restoration from the backup.

See what each update does: About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

Where are calendar events stored? Not on iCloud?

You have not mentioned where your calendar events are? Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other

Refer to the pic below, you may get your answer

Which is your default calendar? Settings > Calendar > Default Calendar

Settings > Calendar > Sync > [All Events] - Watch the GIF below

Have you had any luck fixing this?? Mine just erased everything in my calendar 😩

No luck. Mine was wiped out on Monday

Same thing happened to me. Phone updated overnight while plugged in. My calendar and everything I had entered it in for the past several years and for the next two years is gone.

I have some contacts wiped as well I hope someone in apple responds. My husband says his phone is dialing ppl when the phone is locked. This is beyond ridiculous. I think from now on I’m disabling automatic downloads of software

This happened to my phone and my husband’s phone after the last update. Both our calendars are stored in the cloud and both our calendars are missing a bunch of stuff. My iPad is synced with my iPhone but I haven’t updated it yet. My calendar on my iPad is fine and has all my entries. I tried restoring my phone’s calendar from the iCloud and it isn’t all back. I feel like I can’t update my iPad until my phone’s calendar is restored. We both use our calendars for work and it’s pretty problematic to have many entries go missing.

All of my Calendar events have been removed since the iOS 17.4 update and when I click on the bottom center calendars button inside the calendars app this is the error I get. Then when I try to fix in privacy settings, I have this error.

Just woke up after update last night and my calendar is completed gone or locked or something. It is the main hub to my life and business. How do I get this back. I followed the prompt and that didn’t work.

Same happened to me after update. Computer guy tried everything for 2 hours and could find no fix. So frustrating.

I had the same issue.

I restarted my phone one more time after the update and everything came back

I hope it works for y’all!