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This happens on both my MacBooks running 10.7.3 and has done at least since 10.7 and with iCloud. My calendar seems to work fine from my iPhone.

This popup says "Access to account “iCloud” is not permitted." and gives the option to "Go Offline" or "Ignore" and if I ignore is seems to be fine for a while and then it comes back after a few hours.

I also have an Exchange calendar and some subscriptions but this error always reports as being from my iCloud calendar.

Any ideas how I can fix this?

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The ics file has an organizer line. Per the rfc2445 standard, Section 3.5 - Security Considerations, non event owners are NOT allowed to modified the event... hence the reason for getting the CalDAVWriteEntityQueueableOperation error.

Removing the entire ORGANIZER line from the ics file before importing fixes the issue.

Per the standard, if the event is not on a group scheduled calendaring system,e.g. a single users calendar system, the organizer's line MUST NOT be specified (section - Conformance).

Amazing how many webinar companies get this wrong....

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Thanks, this is what the issue was for me. I was generating ICS files that were constantly showing the OP's error and removing the organizer entry solved it. – markquezada Aug 16 '15 at 0:53

I previously had a similar issue when migrating multiple accounts from MobileMe to iCloud. I resolved the issue by disabling and then enabling iCal sync through iCloud on my iMac in System Preferences -- actually I believe I disabled everything in my case.

Always backup your calendar before troubleshooting (File > Export > iCal Archive).

The following steps are roughly from a Apple Support Community discussion.

  1. Open iCloud in System Preferences.

  2. Switch off (uncheck) iCal sync in iCloud System Preferences pane.
    Backup iCal before doing this. You will need to remove calendar data.

  3. Open iCal and verify the iCloud account is removed in the iCal preferences under accounts.

  4. Close iCal, reopen System Preference and switch on (check) iCal sync in iCloud System Preferences pane.

  5. Reopen iCal and verify the iCloud account is enabled in the iCal preferences under accounts.

At this point if the problem persist I might try completely signing out of iCloud and then signing back in. But remember to backup all related data before turning off iCloud sync - iCal, Contacts, Mail, Photostream, etc...

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I ended up trying the iCloud complete logout. After logging in again, iCal started repopulating events from the cloud, but then after everything appeared the same message showed up again :( – Nic Cottrell Apr 15 '12 at 19:23
You can try the following. Remove user information, caches, calendars, plists. 1. Sign out of all iCal and iCloud accounts. 2. Open Finder, click on Go -> Go To Folder…, and type '~/Library/`. 3. Move contents of Caches folder, iCal plist files in Preferences folder, and contents of Calendars folder to the Trash. Add user account information. 1. Restart computer. Enter iCloud account details in System Preferences. 2. Open iCal and verify all calendars have loaded and no errors occur before adding additional accounts to iCal. e.g. Exchange – Dale Foster Apr 18 '12 at 0:23

Perhaps this might get solved if you add you iCloud credentials to your keychain? I had a problem where Mail kept prompting me for the password even though I had the 'Remember Password' setting enabled in Mail. It got resolved when I explicitly added the login details into Keychain.

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Thanks Vidur! Any idea what the "Keychain Item name" should be? "" or "" or something else? I'm not sure how I can manually associate a new keychain item with though... – Nic Cottrell Apr 10 '12 at 6:41
Here's what mine looked like, I can't remember where I got the 'Where' field...probably some forum or somewhere. – Vidur Apr 10 '12 at 14:39
Thanks - and very interesting. I found an entry on one computer with something similar - just the number in Where was different. On my primary computer, however, there are no CalDav entries at all, but iCal works better on that machine.... – Nic Cottrell Apr 11 '12 at 9:05

This problem was solved using Dale Fosters library trick. I disabled the calendars, backed up and then moved ~/Library:


…to the desktop. Then reenabled iCloud Calendars in preferences. I had to reenter account info in Calendars, now everything is working as it should. Thanx!

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Unbeliveable. Yesterday I tossed away the .plist etc, and successfully merged two calendars via import. Today, decided my doings of yesterday was invalid. and once again (this was the status previous to my preference trashing) threw the 403 error on every imported item. False thumbs up, sry. – bonka Nov 23 '12 at 15:15
When you say you moved them to Desktop - that was just as a backup? You then trashed those files/folder because rebuilt them? – Nic Cottrell Dec 5 '13 at 3:41

I realize that all my message errors were link to my Google account. SO I went to mail preferences and in accounts, and I check the details/info in my google email. All the messages with errors I had seen before were link to this email acouts so if I uncheck this acount on ical , all its notes would disappear and therefore all the errors messages

But I wanted to remain with notes. I could just put the notes under the other email account but I did put again the password and since then I dont have problems anymore.

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The last time I got

The Server responded: "403" to operation CalDAVWriteEntityQueueableOperation.

I looked above the server responded and found under

"The server responded with an error."
Access to (in my case it was)
"Spring: Boston 5 - St. Louis 3" in "Unexpected " in account "iCloud" is not permitted.

So, I selected Go Offline, clicked on my Calendars, unchecked all the calendars, except the one I had named Unexpected, and searched in iCal (upper right corner) "Spring:". What I discovered was last year's baseball schedule. I deleted all 181 entries, quit iCal, then reopened iCal, and everything was fine.

Well that's my experience.

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I had one calendar entry that was a problem. I created a new calendar. Changed the entry to that Calendar and then deleted the calendar. Issue fixed.

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I copy and pasted the event and changed the calendar to the same calendar (this time a little icon of a person appeared next to it). After clicking send and ignore a few times, all is ok.

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Because the item was in iCloud's calendar server, I simply logged into the (or website and deleted the calendar event there. No complaining from the server and the item immediately disappeared from my Apple Calendar app.

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