Contacts and delagate access...

1) CONFIRM YOUR PERMISSIONS

If you are using an Exchange Server e-mail account:

In Contacts, in the Navigation Pane, click Share My Contacts. (Navigation Pane: The column on the left side of the Outlook window that includes panes such as Shortcuts or Mail and the shortcuts or folders within each pane. Click a folder to show the items in the folder.)

Make sure your colleague granted you access to the Contacts from his/her computer:

From his/her computer:

Click Add.
In the Add Users dialog box, in the Type Name or Select from List box, enter your name.
Under Add Users, click Add, and then click OK.
In the Name box, click your name that you just added.
Under Permissions, in the Permission Level list, click the permission level that you want.

(You can create custom permissions by selecting the check boxes and options under Permissions.)

Important  If you select the Private check box on a Contact item in Microsoft Office Outlook 2003, do not grant Read permission to your Contacts folder to anyone whom you do not want to see private items. A person who is granted Read permission to access your folders could use programmatic methods or other e-mail applications to view details in a private item.
 
2) REFRESH YOUR OUTLOOK ADDRESS BOOK SERVICE (This does NOT delete any address books. It only "refreshes" your service.)

From your computer:

a) remove your Outlook Address Book service

On the Tools menu, click E-mail Accounts.
Under Directory, select View or change existing directories or address books, and then click Next.
Click Outlook Address Book
Click Remove.
Click Finish.

b) add back your Outlook Address Book service

On the Tools menu, click E-mail Accounts.
Under Directory, click Add a new directory or address book, and then click Next.
Click Additional address books.
Click Outlook Address Book, and then click Next.

You must exit and restart Outlook to use the added address book.

That should do it!

Hello Ceecurtis,

Thanks for your comment; unfortunately I’m still having the same issue.
Yes, I am using an Exchange Server e-mail account, I have checked the permission, it was set to Editor, and I also changed this to Owner, same issue.

I also removed and re-added the" Outlook Address Book service" as per your instructions, but when right clicking the  properties for the additional mailbox\ Contact List, the option for  "show this folder as a e-mail address book" does not appear.

I am starting to think may be a Microsoft limitation??


Mat