SandraLowe
Level 1 (6 points)
Mac OS X

Q: Server responded with “400” to operation CalDAVAccountRefreshQueueableOperation.

I am getting this error daily with my Apple calendar on my iMac

server responded with “400” to operation CalDAVAccountRefreshQueueableOperation.

iMac, OS X Yosemite (10.10)

Posted on Sep 6, 2015 4:27 AM

by Linc Davis,Solvedanswer
Linc Davis Linc Davis
Level 10 (208,059 points)
Applications
A:

First try a simple fix: back up all data, then delete the calendar account and add it back. Test. If there's no improvement, restart the computer and try again.

Posted on Sep 6, 2015 7:08 AM

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SandraLowe

Q: Server responded with “400” to operation CalDAVAccountRefreshQueueableOperation.

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  • Helpful answers

  • by Linc Davis,Solvedanswer

    Linc Davis Linc Davis Sep 6, 2015 7:08 AM in response to SandraLowe
    Level 10 (208,059 points)
    Applications
    Sep 6, 2015 7:08 AM in response to SandraLowe

    First try a simple fix: back up all data, then delete the calendar account and add it back. Test. If there's no improvement, restart the computer and try again.

  • by christopherfromsausalito,

    christopherfromsausalito christopherfromsausalito Sep 7, 2015 2:42 AM in response to SandraLowe
    Level 1 (12 points)
    Desktops
    Sep 7, 2015 2:42 AM in response to SandraLowe

    So I deleted the connection between Yahoo Calendar and Calendar. No problems now.

    What's the point of all this synching if one party A updates but party B doesn't so there's a conflict?

  • by Marty Roberts,

    Marty Roberts Marty Roberts Sep 24, 2015 4:58 PM in response to christopherfromsausalito
    Level 1 (20 points)
    Desktops
    Sep 24, 2015 4:58 PM in response to christopherfromsausalito

    So how do you delete the connection to the yahoo calendar?  I never made one in the first place!

  • by christopherfromsausalito,

    christopherfromsausalito christopherfromsausalito Sep 25, 2015 12:29 AM in response to Marty Roberts
    Level 1 (12 points)
    Desktops
    Sep 25, 2015 12:29 AM in response to Marty Roberts

    Hi, I am guessing that when you create an Internet Account with Yahoo Mail for example there's a link created between the OS and Yahoo Mail. This link includes Calendar. I'm guessing that when Apple upgraded the OS this link broke - thus the 400 error messages.

    So my idea is delete the Internet Account/Yahoo Mail , restart the iMac, then add the Yahoo Mail account again.

    IN MY OPINION the data resides on the Yahoo Server so I'm not compromising it. All I'm deleting is the link. Then I'm reestablishing it.

     

    My logic is these apps are bundled together so when one piece drops I don't want to waste my time trying to fix one. Better to delete the suite of apps and start over.

     

    This is just my opinion. I am in no way an expert, just a user trying to fix it the easiest way.

    And so far it seems to work for me.

  • by Marty Roberts,

    Marty Roberts Marty Roberts Sep 25, 2015 8:15 AM in response to christopherfromsausalito
    Level 1 (20 points)
    Desktops
    Sep 25, 2015 8:15 AM in response to christopherfromsausalito

    But I don't have a yahoo mail account - so there is nothing for me to delete.  I don't know why this is happening, but  you are right - it seems to have happened when I did the most recent Mt. Lion update.

  • by Marty Roberts,

    Marty Roberts Marty Roberts Sep 25, 2015 8:20 AM in response to christopherfromsausalito
    Level 1 (20 points)
    Desktops
    Sep 25, 2015 8:20 AM in response to christopherfromsausalito

    But I don't have a yahoo mail account - so there is nothing for me to delete.  I don't know why this is happening, but  you are right - it seems to have happened when I did the most recent Mt. Lion update.

  • by Marty Roberts,

    Marty Roberts Marty Roberts Sep 25, 2015 12:02 PM in response to Marty Roberts
    Level 1 (20 points)
    Desktops
    Sep 25, 2015 12:02 PM in response to Marty Roberts

    Yeah!  I checked my ical preferences and then accounts.  The WAS a yahoo account in there which I deleted!!  Don't know how it got there but now it's gone!!

  • by Clockwork.Michael,

    Clockwork.Michael Clockwork.Michael Oct 5, 2016 8:09 AM in response to SandraLowe
    Level 1 (4 points)
    Oct 5, 2016 8:09 AM in response to SandraLowe

    Another way to fix things when you don't have errant accounts:

     

    1. Open Calendar app.
    2. Go to System Preferences > Internet Accounts.
    3. Select the existing account on the left (e.g., "Google").
    4. Uncheck Calendars in the list of services. Your account calendars will disappear from the Calendar app.
    5. Check Calendars in the list of services. Your account calendars will reappear in the Calendar app.

     

    Something, somewhere got stuck. This method resets things in a sense without requiring you to remove account credentials. It's the calendar equivalent of turning it off and turning it back on again.