server responded with "400" to operationCalDavAccountRefreshQueueableOperation

All the shared calendars dissapeared from my MacBook Air. I can find them on www.icloud.com and on my iPhone. I get an error message:

I do not know how to fix it.

MacBook Air

Posted on Aug 4, 2021 4:22 PM

Similar questions

icloud calendar update conflict Dear all, need your help, please. Since a while i have big troubles with my icloud-calendar. Using it on iPhone, iPad and my mac (mojave). I can't delete ONE person a shared my calendar. This person was a former worker in my company. Still not anymore working for us. I want to delete the share, but i can't in anyway, not at iPhone, not at iPad, not at Mac and even not directly on the icloud!! I already deletet the cache of ical at my mac, cause first i thought its a mac subject, but since now i know, it isn't... cause i can't delete it on the icloud directly. Today on icloud i received the following message: "Dialog.Error.Single.Title.Participant.UPDATE Dialog.Error.Single.Text.Participant.UPDATE.CONFLICT" Is there anybody, who can help me out here... MANY THANKS !
609 4
iCloud public shared calendars showing deleted events My calendars on my Apple devices are showing my calendars correctly, but if I subscribe to my iCloud calendars on a non Apple device, deleted repeating events keep showing up with no way to delete them. EDIT: I also just realized one of the repeating events is showing up on two separate shared calendars when the original invite was only to one of them. Help!
368 1
Shared calendar disappeared on MacBook but not iPhone or iCloud All of a sudden I cannot see a calendar that has been shared with me on my macbook. But I can see it through icloud and iphone so it´s only missing from my macbook which is rather strange. Refreshing did not help. I am using Mojave 10.14.6 Thanks!
626 3

2 replies

stedman1

Level 10

264,430 points

Aug 4, 2021 4:24 PM in response to Phil Gates

There appears to be an issue at Apple’s end.

https://www.apple.com/support/systemstatus/

Phil Gates Author

Level 1

7 points

Aug 5, 2021 5:05 AM in response to stedman1

I waited till Apple indicated that the problem was fixed and still have the same response and error message.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

server responded with "400" to operationCalDavAccountRefreshQueueableOperation

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple Account.

Learn more Sign up