Unable to open archived items in shared mailboxes

Please confirm Outlook setting as per Tech note http://www.symantec.com/docs/TECH46184

Microsoft Outlook 2007

1.   In Outlook, click on Tools, Trust Center
2.   Inside the Trust Center, click on the Email Security
3.   Within Email Security, check the box to "Allow Script in Shared Folders"
4.   Click OK to all properties settings, close and re-open Outlook
 
Microsoft Outlook 2010

1. On File Menu, Click Options
2. Click on Trust center & then Trust center settings
3. In the Navigation pane, Click E-mail security
4. Under Script in Folders, enable the following options 'Allow script in shared folders'

If still have problem then increase client logging to maximum and retrive 1 email from primary mailbox & 1 email from shared mailbox to see the difference of call.