Workflow approvals in Outlook 2013 - 404 error

Hi,

We are using Exchange 2013, Outlook 2013, FIM 2010 R2 SP1, client workstation with FIM add-ins and extensions.

Whenever we trigger an approval workflow, we see it in the Portal and can 'approve' or 'reject' it.

However, when opening the approval emails 'Action Item' in Outlook, it shows a 404 error message. We deployed the FIM add-ins and extension using the NetBIOS name of the FIM server, which works via either http or https from a browser...but not from within Outlook.

Also, inside the 'Action Item' 404 message window, there is a "Refresh Page" link. When this is clicked, the actual FIM Portal loads inside the 'Action Item'.

Is this a bug?

thanks,

SK