Consider the following scenario:
You use ActiveSync to synchronize with a Microsoft Exchange Server 2007 mailbox on a mobile device, such as a Windows Phone 7-based phone.
There is a recurring calendar item which has lots of exceptions in the mailbox.
In this scenario, the calendar synchronization times out. Additionally, you receive a “0x80072ee2” error code message.
Note Contacts and email messages in the mailbox can still be synchronized successfully.
To resolve this issue, install the following update rollup:
2530488 Description of Update Rollup 3 for Exchange Server 2007 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.