iCloud Calendar: "Server Error"

Thanks for getting in touch, Andre.K.

It sounds like you're running into a server error when using iCloud. We can help.

Usually when Apple experiences an outage, you can find details about it on the System Status page. While this may have been an issue when you first reached out, it doesn't appear that there are any issues currently. Can you confirm that the error is still occurring for you?

If it is, try using an alternate Wi-Fi network, and if you still see the alert, you can Contact Apple for support and service.

Hope that helps.

Take care.

See the articles Report a junk calendar event invitation on iCloud.com - Apple Support

Delete spam calendars and events on iPhone - Apple Support

Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

If you see suspicious Calendar events

If you get an unwanted or suspicious calendar invitation in Mail or Calendar, you can report it as Junk in iCloud. If you might have unintentionally subscribed to a spam Calendar, you can delete it.

I have the exact same problem. Tried to rule out all sorts of things and ended up even deleting all my calendars to build them form scratch. Even an empty calender gives this kind of errors unfortunatly,... I've called Apple support and they are investigating the issue.

The interesting part is that I also have the same error in combination with p72-calendarws.icloud.com server,..

Looks like Apple fixd the problem. I can open and browse through my calendar app. The unfortunat thing for me is that all my calenadars are gone and restore wont work so i have to add manually all the entry's in a new calendar.

I'm still on server P72,.. so they must have found something not right on that server in stead of taking it out of production.

My data seems to be on server p72. My wife and kids do not have this issue, so they are probably on a different machine.

There are different types of error: Either the calendar crashes by just clicking on the icon in the web browser (calendar does not respond) or in the calendar a switch to the next or previous month causes a crash since the events could not be loaded correctly.

My old calendars are restored as well! :-D Apple support is going tot give me a call in the evening to give me a headsup about my supportcase. I asume they are going to tell me that they found the issue. I pointed them to this thread just to make sure that they were aware of the impact.

Happy holidays all!

Could you check in the error message, if it says the following:

SERVER HOSTNAME

p72-calendarws.icloud.com

It's probably this server that is corrupt.

Can you check on what server this occurs?

Good news! The issue seems to be fixed. My calendars did sync on the Mac and iPhone and the browser app is not crashing anymore.

So hopefully life is back to normal. :-)

I have had this same problem the past 3 days on all my devices, both computers and mobile, just for the calendar. In my case it says "The server responded with an error" when I try to update my calendar on any device, and events do not sync, though I can see them on the device I used to add them.