Out of memory issue while syncing.

ERROR: Exception of type 'System.OutOfMemoryException' was thrown.

This issue is typically associated with a corrupt entry in the Outlook data file. Please review the following help topic to try to address this issue. If you have further issues you may need to contact Microsoft Support for assistance repairing corrupt entries in the Outlook .pst data file or try repairing or reinstalling Outlook.

https://support.microsoft.com/en-us/kb/272227