Outlook may block some MS Access file types: .mdb, .mda, .mde, .adp, .ade. You can use a Registry key to open access to blocked attachments. Run "regedit" to edit the Registry and open the following folder:
Under the key, add a new string value:
The value should be a semicolon-delimited list of file extensions to unblock. For example,
Note: Be sure to make a backup before editing the Registry. If you are not comfortable editing the Registry, ask your departmental IT staff for help or contact the ITS Help Desk for assistance.