For the last couple of days, I’ve been getting strange messages from our mail server telling me that

“Synchronization with your WP8 failed for 1 items.
Microsoft Exchange was unable to send the following items to your mobile device. These items have not been deleted. You should be able to access them using either Outlook or Outlook Web Access.”

I thought this was odd – why just this one appointment? And then the penny dropped.  I’d marked the item in my Calendar as “Working Elsewhere”.  This location wasn’t available in earlier versions of Outlook and presumably Windows Phone 8 (or Exchange Server 2007) didn’t know what to do with it, so stopped attempting to sync the item with apparently-invalid data.

Microsoft has always had a good/better/best model when it comes to functionality available when combining different versions of software. Our Exchange servers are due for an update but this may be something to watch out for with my combination (Windows Phone 8, Exchange Server 2007, Outlook 2013)…