Calendar - Exchange sync issue

Hello.

Probably this is to late, but I want to say, That I already resolve the problem, changing the date and time zone of my exchange Servers to Mountain standard time, because they was on on my city time zone defined on Windows,

all my Mac Os X are on this time zone, also I check the option form my Cal Time Zone Support

HTH

I tested your fix, v.a, but after only two days I am seeing the same error as before (The account "Exchange" currently can't be modified).

The server I am connecting to is undoubtedly on Mountain Standard Time, while I live (and set my calendars) in Pacific Standard Time. I am going to try Inxcuu's suggestion of changing my time zone and will get back to you.

Vicko,

I just read your other post (re: the "double-click on the date" method of creating a Calendar item) and I am retracting my comment above. It may be that I double-clicked on the Calendar to creat the event that was throwing the error. I have redone all the steps of your earlier post and will only create new items using the "+" button and let you know how it goes.

Thank you again for sharing. If this works, what might the bug be? A time zone issue? I'm really not interested in setting my calendars to another time zone just so that it will work properly with the server...

So here is my update (12 days later):

1. If I open iCal on my Mac, I still get the error "The account 'Exchange' currently can't be modified" for events that were created in Exchange via Outlook 2010 / 2013 on my Windows 7 machine AND THAT HAVE ALREADY OCCURED. However, if I click on the "Revert to Server" button, the dialogue box with the error disappears and I am still able to events to my iCal (via the + sign). These events must be saving properly to Exchange, since they almost immediately show up on my iPhone and iPad, which are also synced to Exchange. They also show up on my Outlook 2013 running on Windows 7.

So, it appears that iCal is working with Exchange (after applying Vicko's suggestion), but I still get "The account 'Exchange' currently can't be modified" errors whenever I open iCal and the event in question had been created in Outlook AND has expired. I just click on "Revert to Server" and the error goes away.

2. However, the same fix does not appear to work for Reminders, whose tasks are not syncing properly between my Mac and my iPhone / iPad. In other words, if I add, delete, or modify a Reminder event (which is set up to sync with Outlook Tasks via Exchange) on my Mac, the addition / deletion / modification does NOT show up in my Outlook Tasks, or on my iPhone / iPad Reminders app. However, making changes to any of these other platforms (Outlook Tasks, iPhone or iPad Reminders) automatically and immediately is applied to the other three - but not to Reminders on my Mac.

In the past, whenever the iCal syncing was working, so did the Reminders sync. Now, iCal seems to be syncing (despite the error), while Reminders is not.

Any other thoughts on this? You cannot add iCal and Reminders sync separately - they are bundled together in System Preferences -> Mail, Contacts, & Calendars.

hello everyone - i am not sure if this has been mentioned before but as this 'revert to server' nightmare has caused a lot of trouble i am sharing the solution that seems to be working for me:

switch off time zone support in the 'preferences' for apple's calendar application on OSX.

Hello

I have found that after daily saving time change the error came back on my calendar, trying to figure it up I detect that my OSX Mountain Lion time zone was on mountain standard time (my city), and the Calendar zone was on Mountain Time.

I have set my OSX time zone to Mointain Stand time (without my city) and also the Calendar set to this time zone, and its working now.

its all on the time zone setting.

HTH

I have found more details about this error.

If I select "Central Standard Time - Mexico City - Mexico" in Calendar Preferences. The ".. cant be modified.. " problem appears.

If I select "Central Standard Time - Saskatoon - Canada" in Calendar Preferences. The problem disappears....

So. Even that I'm located in Mexico City, I can use CST Saskatoon - Canada in timezone preferences and it will work fine for me...

Interesting. Unlike Mexico City, Saskatoon doesn't observe Daylight Savings Time, so perhaps that has something to do with it.

Which raises the question, will the error come back when DST ends?

I still find this time zone stuff confusing. I don't even know what TZ the Exchange server is in, since Rackspace has data centers in both Central and Eastern…

So I'll assume for the moment that the server time zone doesn't matter.

Wondering now if the "Set time zone automatically using current location" option in System Preferences has any role in this. I turned it off and made sure that I have New York selected in the OS and Calendar. I think that's what Inxcuu was getting at.

If that doesn't work, I'll go looking for someplace in Eastern that doesn't do DST, I guess. 😐

I have had this problem for some time, "Calendar can’t save the event “xxx” to the Exchange serve" - which refers to a delegates event I'm not trying to modify Discinnecting and reconnecting to the Exchange server only gives temporary relief. Time zones not an issue in my case.

A better solution would be good if anyoine has one.

This has been fixed in my case with the latest Office Mac 2011 update to Outlook and specifically this item in the notes seems to have resolved it:

"Coordinated Universal Time was not included when you created a calendar event in Outlook for Mac Adds Coordinated Universal Time (UTC+0 without a DST offset) to the list of available time zones when you create a calendar event." - Description of the Microsoft Office for Mac 2011 14.3.2 Update

http://support.microsoft.com/kb/2817452

This drove me nuts for months but finally taken care of it seems by the always careless folks at Microsoft.

Things seemed to be going well after I futzed with the OS time zone settings, but now it's starting to come back again (though ten days without errors might actually be a new record for me). Sigh.

Is it still working for you, Victor? My next move may be to look for a place here in the East that doesn't do Daylight Saving Time.

I experienced the same problem. After disabling and deleting the accounts several time, the error kept coming back.

Finally I found a solution on this website: http://www.nutmeghelp.com/index.php?pg=kb.page&id=110

Deleting the calendar.cache file removed the message.

Hello all!

After so much time spending on this reached this thread and it looks like I've workarounded the issue merging the different attempts for solution you all threw at.

So far, I've created an appointment in OSX Calendar and iPad Calendar and successfully. My Blackberry phone is also syncing with these Calendar entries 🙂

It is also working for creating tasks with the "double click" method right on the Calendar.

Here it is:

Started following:

- go to Calendar Preferences and delete de Exchange Account.

- close (Calendar->Quit Calendar) Calendar

- go to Terminal and delete "rm -rf *" all the files inside username/Library/Calendars/

- open Calendar

- go to Calendar->Preferences->Advanced and Turn on time support (if it is already enabled, disable it, close calendar and then re-enabled it)

- in the upper-right-corner of calendar, select your Timezone (very important to select your timezone before adding the Exchange account)

**Here is a change: Used TZ "Central Standard Time - Saskatoon - Canada" as it was proven to work in previous posts

- close (Calendar->Quit Calendar) Calendar

- open Calendar

- go to Calendar->Preferences->Accounts and add the Exchange Account OR -re-enable the "Calendar and Tasks" part for this account in System Preferences.

**Finally, disabled Time Support to "recover" my own timezone (based on System Preferences)

- go to Calendar->Preferences->Advanced Turn OFF time support.

Nowdays we're using DST in Mexico City and its working, so DST worries looks like not related as stated in prev posts.

Please try it, I have been working for almost 3 sync cycles without sending the annoying "Can't update Exchange Calendar... Revert, Retry, Ignore" pop-up.

Regards!

SmartPenwin wrote:

Please try it, I have been working for almost 3 sync cycles without sending the annoying "Can't update Exchange Calendar... Revert, Retry, Ignore" pop-up.

I've been disappointed so many times now that I'm going to wait until someone (anyone!) reports that they got this to stick for at least a month. Until then I'll keep using Exchange's web interface, clunky as it is.

Grrr. 😠