Having similar issue with iCal at the moment but Its occuring in Snow Leoprad and Lion. On iOS devices the 3 calendars in question sync perfectly. I get various error messages and 2 calendars sync ok but the bigger one will not. Very odd as everything has been working perfectly until last week when iOS 5 was released....!
I've been getting these errors for over a week, and it seemed to start when I installed iCloud, but that might have been a coincidence. I share my Yahoo calendar with others, so currently none of my calendar updates are making it up to Yahoo which is causing me some problems. iPhone still syncing fine with Yahoo.
I have three machines, all running 10.7.2 and transitioned to iCloud, and all are getting this error message for my iCal Yahoo calendar account.This just started happening today for me. I have tried deleting and re-adding the account to no avail. Looking forward to hearing from anyone else who has the issue and found a fix.
I am having the same issue here and is on iOS Lion with the iCal calendar. At first when I installed the Y! Calendar, it worked fine and then I realized there was some events missing here and there.
All throughout the whole time, I am getting this error popping up every few minutes:
The server responded with an error.
The request for account “Yahoo!” failed.
The server responded with“502”
to operation CalDAVAccountRefreshQueueableOperation.
I hope Yahoo Calendar engineers will resolve this issue ASAP.
I'm getting the same error, it seemed to start shortly after I transistioned to iCloud. It askes me to stay offline or go online. Neither options do anything but close the error message for a short period of time. Additionally, I'm not able to delete my message in Mail. I delete them, close Mail, but the next time I reopen Mail, the deleted messages are back in my inbox. What's going on??
See artmurp's reply above concerning the issue with your Yahoo calendar... this a Yahoo Calendar problem, not a problem on the Mac. If you are using iCloud for your email and created a mobileme email account - you might try deleting your messages there as everything is being backed up to iCloud (so you don't lose anything - i.e. its a feature). Hope that helps!
If I keep pressing the "Go Online" button then my calendar items seem to show up, it took 7+ presses of the button for this to happen.
However, someone at Yahoo! Calendar contacted me about the issue...
Thank you for writing to Yahoo! Calendar.
I understand that you are encountering a server error message when
syncing with the Yahoo! Calendar, or you are receiving a Fetch Error
when trying to access your Yahoo! Calendar through My Yahoo!. I would
like to apologize for any inconvenience this may have caused.
We would like to thank you for bringing this issue to our attention. We
are currently receiving reports of this issue from other users, and we
have informed our engineering team. They are currently working to
resolve this issue. We appreciate your patience while we correct this
If you have any other questions or can provide further information
regarding this issue, please reply to this email referencing this ticket
Please note that due to varying factors that go into resolving this type
of issue such as diagnosis, troubleshooting, and implementing the fix,
we will not be able to provide an estimated time on when this issue will
be resolved. However, we do plan on having this issue resolved as soon
as possible; and we appreciate your patience while we work on a
Thank you again for contacting Yahoo! Calendar.
Yahoo! Calendar Customer Care
See the message from Yahoo just above this post. I had the same issues with synching Yahoo calendar after updating my OS. After 5 days of trying just about every fix under the book, I gave up and was going to manually type in my info to iCalendar. Low and behold, my Yahoo calendar with events and notes just synched about 5 minutes ago. I suspect everyone will be fine in the next day or two.
I am having the same problem with Yahoo/iCal. I have not yet updated to Lion or iCloud so those don't appear to be causing the problem. IIRC my problem started before iCloud even debuted. Luckily I rely mainly on MobileMe for my calendar events so it hasn't been anything more than an annoyance for me. Yahoo's help pages suggest the problem might even extend beyond just iCal; see: http://help.yahoo.com/l/us/yahoo/calendar/yahoocalendar/sync/
On another note, I have not been able to post replies to these forums without going into the advanced editor; if I try replying normally I get an error message. Not sure what that's all about. (I am using Camino 2.0.9)
Not so sure; wish I shared your optimism. I've had iCal fail completely with "509" and other sync issues to essentially every service. My iCloud version even created strange copies of my 7 calendars, some of which had over 20 copies. Apple phone support suggests deleting any copies on iCloud, backing up iCal calendars to *.ics files, going into Settings -> iCloud and unchecking Calendar, rebooting, re-checking iCloud Calendar in Settings, and trying again by restoring the backups. I had some success, but after a week at this iCal remains completely unreliable. No issue with Contacts and Mail seems to work. This is, for me, an area where MobileMe worked well but not at all in iCloud.
I'm having the exact same problem on MacBook Air with 502 but got a few 504 errors too.
Also iPhone4 is working fine with Yahoo.
I've tryed the same steps for diagnostic and found no issue. I tought to call Apple Store to get help flushing all iCal configs files from the Library, but I just found this post about it...
I was'nt aware of Yahoo Proxy errors.
As I need my calendar syncronized between Outlook, my iPhone and iCal, I just exporter all data from Yahoo to an ics file (http://help.yahoo.com/l/us/yahoo/calendar/yahoocalendar/importexport/importexpor t-02.html;_ylt=AkJYzYlyX7TXVac6MPid5.HTWyl4), imported it in iCal and activated iCloud to get every thing on sync with my iPhone4 and it worked fine.
Maybe, this Yahoo issue is related to their financial problems... Maybe, Google should buy Yahoo!... ;-)