Microsoft Outlook allows users to share folders to view e-mail, calendars, tasks, notes and journals for quicker access and organisation. However, before users can share mailbox folders, they must choose a permission level for others accessing their folders. If you've added an Outlook user's mailbox folders to your Outlook tree, but you receive a "Microsoft Outlook is Unable to Expand the Folder" message, or if other users receive this message when trying to open your shared mailbox, setting proper access permissions for the shared folders will resolve the error.
- Skill level:
- Moderately Easy
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Right-click "Mailbox" on the computer that contains the shared mailbox or folder, then click "Properties" on the shortcut menu.
Select the "Folder Visible" check-box on the "Permissions" tab, then press "OK."
Click "Options" on the "Tools" menu.
Press "Add" on the "Delegates" tab to choose individuals who will gain access to the shared folder or mailbox.
Highlight the permissions you want to extend to delegates with access to the folder in the "Delegates Permissions" dialogue box, then press "OK."
Double-click the shared mailbox or folder in one of the delegate's mailbox tree to open it.
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