I started noticing lots of (read: over 25000!) duplicated calendar events in the last weeks (a few events with up to 2500 copies!) which made Outlook 2011 and my iPhone totally unresponsive.  This was probably the result of having a mixed setup of iCloud / MobileMe / Exchange 2010 / Local calendars etc.

I finally got rid of the duplicates on my Exchange 2010 account  (I used http://www.vaita.com/ODIR.asp  on Outlook 2010 PC) leaving about 900 events, and cleared the local and iCloud/Mobile Me events (so I only have entries in Exchange 2010),  but I'm wondering now if I actually still need to enable Sync Services in Outlook 2011 (I'm running v. 14.2.2 atm), on OSX Lion 10.7.4 at all?

iCal (+Tasks/Reminders) and the Apple Address Book seem to have decent support for Exchange 2010 out of the box (via Apple System Preferences > Mail, Contacts & Calendars), so why should I enable the Sync Services in Outlook 2011 still?  It's a pretty confusing option. 


I decided to reinstall Outlook 2011 and started syncing mail and the de-duplicated calendars again from the Exchange 2010 server (while keeping Sync Services disabled), but now I notice these types of errors showing up for probably the majority of my calendar entries:

ERROR:
An error occurred while updating the calendar event "*TITLE*"
  
DETAILS:
Please delete this event and create a new event.

Error code: -19126


I double checked some events which generated the error, but at first sight they simply look correctly synced in Outlook 2011.  So why these error messages?
I have two calendars in Outlook 2010, the default one for home and other for work. I want them both to appear in Windows Live.
I've installed Hotmail Connector and the default calendar from Outlook appears in Live, no problem, but the other one doesn't appear.
I've tried publishing the work calendar and sending an invitation to myself (same account for Hotmail and Windows Live)  to subscribe to it but I'm told that the calendar has to be made public before I can subscribe. However,  it's private so I can't do this. Import and export is no good; they need to sync.

I haven't tried the other way around, that is to create a calendar in Live and sync it to Outlook, so this might work, but it isn't what I want to do. I need to create the calendar and events in Outlook and have them flow through to WL. Not sure what I'm forgetting or whether this is possible. Hope someone can help.

Thanks.
I have an iMac and a Macbook pro both running on Mac OS X and both have Outlook for MAc 2011. 

I just want to sync Contacts and Calendars between both machines. What is the simplest way to do this?
I want to combine two calendars into one - can you copy information from one calendar to another ?

I have a Hotmail account for myself and one for my wife. Can I setup Windows Live Mail on my desktop to show and sync both calendars? My original account shows the calendar, but when I add my wife's account all I get is the mail. I don't see the calendar for that account and I don't see a way to add it.