iCal no longer syncs with Exchange -... • Mac Support Guy

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iCal no longer syncs with Exchange -...

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Guest

iCal no longer syncs with Exchange -...

PostFri Dec 09, 2011 2:13 pm

I recently updated to Lion.  My iCal was working fine with my Exchange Account.  Now it's not.  It seems to be stuck in the "Updating" loop. When I restart iCal, sometimes it gives me the "iCal can't save the event to the Exchange server" message.  It says that my Exchange account can't "currently" be modified.  No other settings have changed and it worked 24-hours ago.  Please help.  Frustration is setting in...

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Guest

Re:iCal no longer syncs with Exchange -...

PostFri Dec 09, 2011 3:05 pm

Same problem for me. I now get the pop up "The account xxxxx currently can’t be modified."

 

Worked fine until the Lion upgrade. Mail and Address Book are still fine. I've verified the server settings, tried the prior suggestions about enabling time zone support, but to no avail.

Guest

Re:iCal no longer syncs with Exchange -...

PostFri Dec 09, 2011 4:32 pm

iCal hasn't worked at since I upgraded to Lion on my one month old 15" MacBook Pro. It doesn't sync with anything else...iPhone 4 or MS Outlook via Exchange server used at work. They all synced perfectly prior to Lion. Also, I'm having the same problem with Address Book...no syncing. I went to the Genius Bar and they couldn't fix the issues. Very upsetting as I need these for day to day business. Fortunately I can use the iPhone, but certainly would like these to work on the MacBook.

Guest

Re:iCal no longer syncs with Exchange -...

PostFri Dec 09, 2011 5:23 pm

I have same symptoms, except that it at first worked for a week or so, at least initially got synced. Have many tasks there, and appears to have gotten hung trying to send a deny/accept for an event that already got deleted in iCal. So not a Lion issue.

 

Went to ~user/Library/Calendars and deleted Calendar.Cache file. That cleared the errors about "unable to send accept, account cannot be modified". No apparent errors in iCal, but doesn't appear to be syncing.


Anyone know how to tell when iCal is syncing with Exchange?

 

Pulled my Console logs for "iCal" string, get the following:

 

11/4/11 12:30:15.713 AM iCal:  error = Error Domain=CalExchangeErrorDomain Code=-18 "iCal can’t decline the event “Canceled: Updated: Program Review Meeting” on the Exchange server." UserInfo=0x7ff7cc145150 {CalFailedOperationKey=<CalExchangeCreateResponseOperation: 0x7ff7cb9e6050>, NSLocalizedDescription=iCal can’t decline the event “Canceled: Updated: Program Review Meeting” on the Exchange server., NSLocalizedFailureReason=The account "PAC Exch" currently can’t be modified. To discard your changes and continue using the version of your calendars that’s on the server, click Revert to Server. To save your changes on your computer until the problem is resolved, click Go Offline.}

 

.... [cleared the cache, and restarted]

 

11/4/11 12:34:57.175 AM iCalExternalSync: -[CalManagedObjectContext context:shouldHandleInaccessibleFault:forObjectID:andTrigger:] Inaccessible fault: [<CalManagedEvent: 0x4010f9e00> (entity: Event; id: 0x4010f66c0 <x-coredata://C1804426-485D-4AD9-B33F-946D655EE518/Event/p4992> ; data: <fault>)] for objectID: [0x4010f66c0 <x-coredata://C1804426-485D-4AD9-B33F-946D655EE518/Event/p4992>]

11/4/11 12:34:57.175 AM [0x0-0x97097].com.apple.iCal: 2011-11-04 00:34:57.174 iCalExternalSync[2888:707] -[CalManagedObjectContext context:shouldHandleInaccessibleFault:forObjectID:andTrigger:] Inaccessible fault: [<CalManagedEvent: 0x4010f9e00> (entity: Event; id: 0x4010f66c0 <x-coredata://C1804426-485D-4AD9-B33F-946D655EE518/Event/p4992> ; data: <fault>)] for objectID: [0x4010f66c0 <x-coredata://C1804426-485D-4AD9-B33F-946D655EE518/Event/p4992>]

11/4/11 12:36:57.488 AM iCal: removeEntity failed: can't find CalendarItem

11/4/11 12:36:58.516 AM iCal: removeEntity failed: can't find CalendarItem

11/4/11 12:36:59.605 AM iCal: removeEntity failed: can't find CalendarItem

11/4/11 12:37:10.185 AM iCal: removeEntity failed: can't find CalendarItem

11/4/11 12:37:14.759 AM iCal: removeEntity failed: can't find CalendarItem

Guest

Re:iCal no longer syncs with Exchange -...

PostFri Dec 09, 2011 6:01 pm

I too have suffered from this problem and normality seems to have been restored by deleting the "Calendar Cache" file in ~/Library/Calendars

 

I found the iCal/Exchange syncing unusable on Snow Leopard as a similar problem seemed to result in a storm of dialog boxes from repeating events.  I upgraded to Lion for what I thought was better compatibility with Office 365 and had been using it OK for several weeks before getting hit by this problem so things have definitely improved for me.

 

I'll continue to use your workaround and hope that the problem doesn't come back too often.  Like you, I am not having any trouble on my iOS device.

Guest

Re:iCal no longer syncs with Exchange -...

PostFri Dec 09, 2011 6:35 pm

Thank you!!!!!  I deleted my calendar cache file and everything is working fine now.


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