Lost all calendar events on iPhone after iOS 18.5 update

The Apple update 18.5 deleted the “In my phone” iCloud calendar completely the only events that were still there were my email calendar events. The restore on iCloud.com was also deleted. I haven’t had any issues with my calendar until this update it deleted 3 years worth of events.

I used an old iPhone device I had and downloaded an older version of my saved iCloud backup at setup from 6-12-25 which was before the update and I successfully got the calendar events back up. I then had to go through every single day and save each event to my email calendar instead of iCloud so now I have all my events on my current device.

I had this issue after updating to 18.5 but was able to get all my calendar events back by doing this:

settings - apps - calendar - calendar accounts - iCloud - iCloud calendar - use on this iPhone toggle off and back on.

right after doing so, all my old events populated again.

go to settings, apps, calendar

check sync setting,

somehow mine changed to 3 months at the update which hid previous events, but can be set for as recent as two weeks hiding all but recent 2 weeks.

I just had the same issue today, the calendar events just went missing suddenly, only difference that i didnt make an update

Try to go to App Store > Calendar, if it shows the cloud logo, click it, download and Open. This works for me, because I think somehow it offloaded itself without me knowing.

Frustrated for few hours because of this issue!! Apple definitely need to do something about this

This just happened to me too and there are simply too many posts to wade through in my current state of mind...

HOWEVER....if you have a MacBook, you may be able to retrieve your calendar that way.

When I tried pulling info up on my phone, I changed from "All Events" to a month back....and that was all I got...the month back. None of the upcoming stuff.

I NEVER use the calendar on my MacBook, just my iPhone, but the info was all there in my iCloud on my laptop!

On my MacBook, I went to iCloud and hit the Backups button. My calendar backup was actually turned off, so I hit the toggle just to see what happened.

When I went back to the MacBook calendar, it was all there!! Woohoo! The days I need to take my sister to chemo, upcoming appts of my own, etc. And past info was there as well.

The problem now is that when I try to add those events back into my phone, they show up in the laptop calendar again...so the laptop calendar show duplicates.

I tried to export it to my iPhone and it prompted me to save it as "Siri Suggestions" on my MacBook desktop. I assume it came up as that because I enter 90% of my calendar events in via Siri.

I tried adding the Siri Suggestions calendar on my iPhone settings, but it didn't help.

I screenshotted the upcoming 3-4 months of events on my MacBook in case this happens again... what a huge pain.

On top of everything, I've also found that my iPhone locked me out of my main Gmail account (in the Apple Mail app) and wouldn't let me back in. I deleted the account, thinking I'd reenter it...and now not only does it loop me in authentication screens for 20 minutes, it's now also deleted the inbox to my other Gmail account, that was still on the phone.

HUGE HUGE HUGE failure APPLE!!!

None of that worked for me. Try:

settings/select apps/calendar/default calendar/under iCloud select calendar!!

I’m not tech savvy, I just played with every button and toggle related to ‘calendar’ until I stumbled upon it.

[Edited by Moderator]

on your iPhone, go to settings, select apps at bottom, select calendar, go to sync and make sure or choose "All events"

all events before March will appear

ValHolmes1 wrote:

I just opened my calendar to verify an appointment time I know I have this Friday and all of my calendar is gone! This is devastating! Looks like I’ll be changing to a different/more reliable application. This is extremely disappointing.

Go to Settings>Apps>Calendar>Accounts. Is the account you use for your calendar there? If not, add it back. If it is there, double-check to make sure that Calendar is turned on.

With iOS27, it looks that the only way to lose all your events is to have deleted the calendar from iCloud by either your iPhone or from a desktop, or your calendar was never in iCloud and you deleted inadvertently from the iPhone, or you have selected the wrong calendar to view. The lower right when in the calendar app has a calendar symbol that will show which calendars are selected to be visible and active.

It be helpful to describe what lead up to this apparent loss. New phone? new iOS update? updating apps? changing settings? making changes in calendar? etc. And exactly what was done to "recover". I have a Home calendar in iCloud that I use, and another Home calendar on the iPhone (with a different identification color) that I do not use, both accessible from the iPhone. Do you synch with a desktop MAC? My US holiday calendar is a default that came on the phone.

None of that worked for me. Try:

settings/select apps/calendar/default calendar/under iCloud select calendar!!

for MillsMjohn: iOS-18 made improvements to calendar and it was after 18.5 that I had my moment of calendar "fear" when noticing events over 3 months old (or was it 6?) were no longer displayed, which had me believing all my old events were gone, forever. The solution found was that by making a change in settings for calendar, all the old info was displayed again, it was never lost. Actions like "Restore iPhone" and "restore backup" have a place in fixing problems when applied correctly for the right situation, but restoring the same setting causing the situation as I experienced was not going to work, the setting had to be changed.

There is just no way to wipe calendar clean by accident or update without a user's misstep. I was slow to discover the need to change a setting and maybe that is your situation. You don't say whether the calendar is completely gone, or remains and no events are shown, or whether some events are shown. When the situation is explained completely in cool terms, a path forward can be found and hopefully misguided recovery efforts have not made recovery impossible.

Hello Zwano: Solutions have been posted for those having only most recent events displayed, like a few months (changing a setting preference for the calendar app will show all). If that does not work for you, it's possible some innocent action deleted. Pocket calls are an example of an innocent action.

Zwyno: My "Home" calendar is in iCloud and is viewable and synchs to my iPhone and to my desktop. Is that your arrangement?

What about your desktop calendar? Are you saying those appointments are gone from there too? In my experience when I could not find on my iPhone, they all were on my desktop computer which is what lead me to discover the settings change on the iPhone. If you don't use/have a desktop Mac (or laptop), then your calendar was only on your iPhone, maybe in iCloud if you backup to iCloud. On the other hand, if appointment actions were done on your desktop, those affect your iPhone calendar too (via iCloud). That goes for any iPad calendar too. And you can have multiple calendars, make sure you have the right one selected for what you are looking for. Good intentions may have inadvertently removed or hidden what you are looking for.

Same thing happened to me. I sync my calendar to my iCloud, yet when I tried to restore an older backup, it didn’t show any. This happened to me several years ago as well. I freaking hate apple right now!! They need to stop rushing all these updates.

Correct. Syncing to iCloud and restoring from iCloud backup are two different things. You can still sync your calendar and reminders to the iCloud (to share across different devices using the same iCloud account) and also still have the option to restore your phone from an older backup with all of that synced calendar and reminder information included in those older backups. My older backups are gone. I didn’t delete them, yet they are all gone.

It appears it’s deleted mine too, although initially I didn’t put the two together, but I’ve done the update recently (automatically) went to check my calendar today and notice past events are missing.

I’ve tried a few things after reading some guides on here, but alas it hasn’t worked.

I’ve tried searching to see if just not showing but still on iCloud but isn’t finding anything

I have also updated to 18.5 and noticed all my events that I have catalogued in my calendar have all gone! I have also followed the information online to try to get them back. I have also looked on iCloud to restore but they are all gone from there too, just like others have experienced.

This has all my appointments on there! How else can I get these back as I cannot possibly remember everything that was in there (which is the whole idea of a calendar)!!!

Wife has a iPhone 15. Noticed this on the iOS 18.6 update. Could have been before.. not sure. Her entire iCloud Calendar wiped.... She is not one that tweaks her settings. They stay the same. I just bought a 17 (in the past week), not sure how it would be relevant or not, but I have no issues with my calendar. So far, only Calendar issues.

I just had the same issue when I checked my calendar tonight. Is there any solution to this? I’ve tried everything posted about in this sub and nothing has helped. My calendar has been completely wiped. I had years of events and months in advance of appointments, events, work/work-related scheduling, so I really don’t want to have to comb through my life to put my calendar back together.

I too am shocked and very frustrated by this happening. I just found this support page! Thank heavens! Ive been talking to Apple Support and even to my local Apple troubleshooter to rectify all of my information from the past years!! To NO AVAIL!!! I only have 6 months of backup now and have not had any success in retrieving my history. Im so angry. Apple has done us ALL a terrible disservice doing this!! What is my recourse? HELP PLEASE!!!

I’ve just had all my calendar events drop off too. Many years of friends birthday dates, plans and events ahead in the next month lost. Tried all the ideas here but none worked. Feeling very sad to lose all this. Quite shocked that this can happen. The most likely reason seems an update but I’m not sure which one - 18. something. Does anyone have ideas for alternative calendar apps that this won’t happen too - ie non apple product

Charles I beg to differ with you re deleting calendar being a user misstep! My personal experience has involved the senior techs last month both in person and on the phone over a two week period. All I spoke with were not at all familiar with my issue, could not find a reason why this happened and after trying all methods you suggested we’re unable to resolve this problem. Very frustrating and discouraging to me re Apple!

In your situation there has been a very unique dynamic that still defies understanding. It's puzzling. We don't have instant replay to help solve. But there is an explanation and perhaps the answer to what happened and is recovery possible will become apparent.

I’ve tried all the solutions as listed above.

In answer to some questions everything was wiped out of my calendar.

I have looked at sync, which is set to all events.

Nothing has restored back to my calendar and it’s been frustrating for me to add new events and meetings.

The only thing that survived was the birthdays that are pulled over from my contacts (so wouldn’t disappear anyway).

Devastating! My Calendar was synced between my iphone 13 and my macbook, but my reminders weren't. On my phone, I turned on sync for my reminders, and I selected the 'merge' option given. Then my phone automatically gave me the same 'merge' screen for Calendars (even though they should have been synced) so I selected that. I opened the Reminders app and it showed a welcome screen, suggesting I update the reminders app 'to unlock its full potential' (lol) so I updated. Now all my Reminders and entire Calendar are wiped. I used restore for the Calendar to a backup from earlier today, but it restored from about 3 years ago!! The Reminders did not even show as an option for restore, and even 'deleted items' is gone in the app, so I can't restore from there. Everything is gone. All calendar events and all reminders. Years and years and years of building dates and lists and efficiencies. FFS. I was actually wondering whether to use google Calendar/Tasks but i thought it would take too long to rebuild and I should stick with Apple. but I guess I'll be changing over now, hey. Very peed off!

Do not use the delete from iPhone. Then you will loose everything. I just tried for fun - because everything was gone. And future events I have put in calendar since all of this happened are now gone as well… 😢

I’m currently experiencing this same issue. I’m not sure what happened but all of my events on my calendar all have been deleted. I had years and years of events on the calendar. I’ve tried just about everything to get the events back but I’m still not having any luck. Anyone figure out how to restore the calendar? It just randomly deleted itself.

I can’t agree with Charles Palenz’ comment. I’m very familiar with the use of my Apple equipment and even help my family with their issues. This situation is NOT because of an innocent mistake I may have made. This clearly is on Apple. The company has created a monster somehow and apparently can’t fix it. What a disaster! I’m lost without my calendar!

I agree- ALL of my calendar items have been removed ; this is maddening . I guess it’s back to a paper calendar so I can reference dates in the past 1-5 years !!!!! So aggravating - wish a fix could be created - we all know that data is stored somewhere ….

So I posted back in September 2025. All my calendar entries from around March 2023 disappeared. I tried every fix and spoke with apple support on the phone. They were stumped. Nothing worked. So I started to use a different calendar app. Just checked my icalendar and everything from 2023 - 2025 is back. No reason. Didn’t do anything. All just reappeared. However I’m now too nervous to rely on iCal. First time in 14 years of Apple use I’ve considered getting an android phone!

I just opened my calendar to verify an appointment time I know I have this Friday and all of my calendar is gone! This is devastating! Looks like I’ll be changing to a different/more reliable application. This is extremely disappointing.

The Apple update iOS 18.6.2 deleted the “In my phone” iCloud calendar completely! I have an iPhone 12.

It could not update for a while due to data space issues. I have tried to delete huge files, photos, apps and so on. Still not enough space.

But last night it automatically made the update anyway.

But now my calendar is wiped. I’ve tried the standard recommendations: checked in iCloud that calendar setting are on, checked in calendar that all calendars are there, restarted the phone… no luck. All gone from October 2025 and forward. Now I can se the update symbol (lines in a circle) is spinning as if it’s trying to update but can’t. Waited a long time with WiFi on and plugged in. Nothing.

I just lost all of my past and future calendar events and I’m so upset. All my future appointments, events, birthdays, anniversaries, everything is gone. I’ve tried doing some of the suggestions I’ve seen here but nothing has worked. I’m honestly so done with Apple and this was the cherry on top for me. All of my plans are lived out of my calendar app and now everything is gone and I haven’t found a way to get them back.

This has just happened to me and I am devastated. years of information. I have been on the phone to apple many times and in a apple store and they have no idea how to assist, they have tried every toggle change etc but nothing. If this was from an update and suspect it was major fail apple... someone please help

All my events from Iphone (16 Pro) Calendar just disappeared except for the holidays!!! I am at the edge of a nervous breakdown because this is all my work!! Meetings, medical check ups... I did absolutely nothing, I just opened the calendar and out of the sudden it was empty! HELP! I tried the ICloud, nothing!!! What the heck happened?

Did it ever come back? I have spent the last 31 hours of my life doing everything online, and about 5 hours on the phone with apple support with no luck and no answer on how to get my past or future events back at randomly got deleted yesterday at 4pm... any help or advice I will try anything.

My entire iCloud Calendar event history has disappeared following an iOS update on 9 November 2026.

The calendars themselves still exist and are enabled, but all my manually created events have vanished. Only Facebook RSVP events, and gmail calendar entries remain.

The same issue is present on iCloud.com and the Calendar app on my Mac, and iPad.

I checked iCloud Data Recovery. There was only one archived calendar version, dated 10 November. I restored this archive, but none of my original events returned.

I have already tried everything suggested in the threads, I am especially concerned with entries not showing in the iCloud browser interface.

I am a business owner and this is my work calendar. I'm set to lose a significant amount of money and suffer irreparable damage to my reputation if this is gone forever.

Did you ever figure this out? This just happened to me and I’m stressing because I have so much on my calendar.

After getting 18.6.2 my calendar dates with info vanished. How do I get it back. Lost important dates

Me too! Why? I had my doubts upping to 18.5, made at myself for doing so. Hope someone here has a solution. Thank you

Have found my shared events are still in iCloud. Just can't seem to get them on my cpu calendar or phone calendar. Have tried unsubscribing to iCloud and turning back on but that doesn't work.

This just happened to me. Years of calendar entries are gone. Is there any way to retrieve them? Thanks.

Same thing just happened to my wife. All calendar entries after March 2023 are gone. Devastating!!!

this helped for me just now, thank you!

What worked??

What worked? This just happened to me too. What worked??

I’ve lost everything. Has anyone got a solution?

Same! Everything from March 2023 gone!

This worked for me after many frustrated hours, thank you so much

my iphone updated through a few updates (now on 26.01) and just noticed I’ve lost everything!! What is working?

iCloud calendar is blank, too.

So, did you select "Keep on My iPhone" or "Delete from My iPhone" because I cannot turn off the toggle without selecting one of those two options...

Thank you so much Bensonbu! That worked a treat and was sorted in a couple of minutes! Phew!!

Ive just lost all

my important Calendar events on my iPhone 11. Went into Princes St, Edinburgh but the guy told me to reboot/etc, and couldn’t make a technical appointment to assist me.

Definitely.

Im an OAP and wanted help with what the guy in the Apple Store, Princes Street, Edinburgh was telling me. At the end he merely said: Phone Apple Support!

Not helpful in any way.

Never buy iphones again

lost all calendar events like everyone else. Help!!!!

Did not work for me! :(

I just had this issue and this fixed it!! Thank youuu

My phone updated and then all my calendar events disappeared

We need to know why this could happem

This actually worked for me!! I’m so grateful!! Thank you!!

I’ve got this same problem and am devastated at losing years of appts and future appointment and birthdays anniversaries dates friends passed etc etc.. did you ever get it resolved?

The same has happened to me. devasting, Any luck?

Same here!! I’m gonna have to try and remember most of it

but this is UNACCEPTABLE especially for an Apple product

Doing this actually deleted my remaining future events! Now I have zero events on my calendar. How could Apple mess this up so bad. This is really frustrating!

Apple needs to fix this. None of the fixes listed here work for me.

What did you do?? I can't get mine back..

If you are setup similar to the following image, circled items important, its impossible to lose anything:

I have the same settings and my calendar entries disappeared with the update too. If it's impossible to lose them where are they?

Dej1001 wrote:

I Updated my iPhone to 18.5 and my calendar events are completely gone. I have tried everything and contacted Apple multiple times. Right now, I am currently using an old device to see if I can use an older iCloud backup to get the events back. I tried one backup, and it didn’t work, so I am working on another older backup to see if that will work. If not, then I have no other options. There was no restore backup on iCloud.com for the calendar either; it seemed to have deleted as well. There was definitely a glitch in their recent update, as I have checked on Reddit, and Apple said a lot of users are contacting them about this. I use my calendar for everything, and it’s all gone.

[Re-Titled by Moderator]

Original Title: Calendar Events wiped out

If you were truly syncing your calendar to icloud and not an email account then you would recover by doing this Restore your calendars and events on iCloud.com - Apple Support

Since calendar are synced it's not part of the backup What does iCloud back up? - Apple Support

Omgitsparkles wrote:

Same thing happened to me. I sync my calendar to my iCloud, yet when I tried to restore an older backup, it didn’t show any. This happened to me several years ago as well. I freaking hate apple right now!! They need to stop rushing all these updates.

Sorry syncing to icloud and restoring from icloud backup are two different things.

You sync icloud data to the cloud therefore it isn't part of the icloud backup.

If you followed that link I gave to the OP and if you truly were syncing to the cloud it would restore it for you.

Me too!!! At first I thought my daughter somehow cleared everything but it appears this has happened to lots of people and recently. I just noticed mine within the last week. All events gone. I’ve done all the troubleshooting and contacted Apple. I have a callback with them tomorrow morning so hopefully I get help. Soooo freaking annoyed. 😑

I had the same issue after updating to IOS 18.5. Whether it’s actually this update, or the deprecation of iTunes (which I always successfully used to sync my Outlook calendars to iPhone/iPad) isn’t entirely clear. Apple have been nothing short of hopeless in “supporting” people.

Here’s what I think has happened to me, and forgive me as I’m no expert. So, I downloaded iCloud for windows. It told me I would sync (“sync” being the important part) my outlook calendars with iCloud, as well as my contacts. The contacts were synced, but the Outlook calendars were wiped clean. 16 years of diaries gone in an instant. Unfortunately, my backup from Outlook calendars were backed up to Windows One Drive. So, when iCloud wiped the calendars, the .pst file for the backup on One Drive was automatically updated to wipe that too.

Unfortunately, I didn’t have a stand-alone backup of the .pst file done recently, and had to revert to the last one I had for December 2024. I’ve managed to rebuild some of my diaries, but it’s a nightmare. I haven’t had the guts to try it again. If the so-called support from Apple senior team so far is anything to go by, it doesn’t inspire confidence. But there surely must be a way to synchronise data between devices and platforms that doesn’t risk losing valuable information we all depend on.

I’m going to reach out to Apple again tomorrow to see if they’ll walk me through an idiot-proof sync, but I’m not holding my breath waiting for success. One thing’s for sure, I’ll have several backups of the .pst file on several stand-alone drives before I do anything!

Any other ideas or comments welcomed.

Thank you SO much for this! It worked perfectly and all of my calendar entries are back! Life saver! Thank you!