Calendar crashes after update to iOS 15.1

After having read some previous post posted earlier today I checked and I am on iOS 15.2 and the issue is still continuing with my iPhone, iPad, iMac. I really think it has something to do with the iCloud server as it can be difficult to create an event and even see shared calendars (which appear and then disappear).

I have a brand new iPhone as of last week. Updated 15.2, the problem persists. I don’t have exchange on my phone, so that’s not a possible explanation. This is clearly an Apple server/compatibility problem. Like almost every problem on an iPhone, this is their fault, they are $1 trillion company that cannot maintain updates and devices across all of their different products.

i have the same problem after downloading 15.1.1 on iPhone 13 and also have Exchange porting into my calendar. My calendar is basically unusable at this point & I need it for my job in the day to day. If they don’t fix it soon I may have to switch to android.

Have you tried creating a calendar event via a web browser at iCloud.com? I was having trouble even doing that and after contacting Apple tech support and telling them about my iCloud.com/calendar trouble they took a look at it and saw there was a problem at the server level. I'd suggest trying to create events atiCloud.com and seeing if that works for you.

Yes, I agree that there is some communication issue happening. What I did was abandon the Apple calendar. I’m using the Outlook app and linked in my Office 365 and Gmail accounts to that. It works better. I think Apple should address this issue asap—it’s a glitch in their update 15.1 as this was not happening before that: everyone I know is having this issue.

I am having the same issue with my iPhone 13 Pro Max on iOS 15.1.1. When I disable my exchange calendars the iCal works fine. As soon as enable those calendars the screen freezes and lags and I have to exit out of the app. Apple please provide a correction to this frustrating problem.

I’ve been having the exact calendar issue and it started around the same time as yours. It’s madly frustrating and it’s the only app that freezes or crashes. I cannot figure out how to resolve this issue.

I have the same issue but if I closed the app and reopened it, it would sometime work properly. Then it started freezing after entering 2 characters into the event.- I've found that if I enter the time and date without an event or location first it saves it as a new event. I can then go back and edit it to put in the event name and location. Not a fix, but a workaround until Apple gets off their *** and fixes the bug. I use my calendar for everything and it was infuriating to not have access to it.

Have you tried using Calendar via a web browser like Safari at iCloud.com? When I had my problem entering information via iCloud also didn't work and after Apple tech-support escalated the issue found there was a problem at the server and not necessarily with the mail apps on my iPhone and Mac. Just a thought!

Sam issue reported here:

https://discussions.apple.com/thread/253295714

and here:

https://discussions.apple.com/thread/253296151

Widely discussed here (no fix yet):

https://discussions.apple.com/thread/253295714

Make sure the stacking icon is unchecked, this causes the lag and crashing.

The bug happens not only with Exchange but also with other calendars, in my case with Google calendar, that have many events. It's at least a performance/scalability issue of 15.1.

This is such a PITA! What on earth has happened to Apple's software build quality recently?

It was working absolutely fine before the latest round of updates.

Poor show.