This issue also occurs:
- If you search for one of the contacts in the Lync 2010 client, the search result may display the information of a different contact who has the same work number in your Outlook Contacts view.
- If you start a conversation with one of the contacts, the information of the contact may be displayed incorrectly in the conversation window.
- If you receive a toast notification from one of the contacts, the information of the contact may be displayed incorrectly in the notification.
To apply this update, you must create the DisableReverseNumberLookup registry subkey in the following location, and set the value of this registry subkey to 1:HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Communicator