This article provides the solution to an issue you may encounter when displaying a message using the Outlook Connector.
When opening a message in the Outlook Connector, the following message is shown:
"An unknown error occurred while processing the message."
This issue occurs because the Exchange 2003 Management tools provide a version of MAPI that is not compatible with the Outlook Connector.
To fix this issue, uninstall Microsoft Exchange 2003 Management tools.