Consider the following scenario:

  • You create a contact card for a user (user A) in Microsoft Outlook.

  • User A’s email address or telephone number is changed to the email address or telephone number of another user (user B) in the contact card in Outlook.

  • You perform a search for user A in Microsoft Lync 2010.

  • You try to start a conversation with user A by sending an instant message.

In this scenario, user B receives the instant message unexpectedly. However, in user B’s conversation window, the sender is user A.

Note This issue may also occur when you try to make a call or send an email message to user A by using Lync 2010. In this situation, user B may receive the email message and see user A as the sender.


To resolve this issue, install the following cumulative update:

2884632 Description of the cumulative update package for Lync 2010: October 2013


To work around this issue, disable Outlook integration in Lync 2010. To do this, follow these steps:

  1. Click the Option icon in Lync 2010, and then open the Lync - Options window.

  2. In the Personal tab, select None in the Personal Information Manager list.

More Information

For more information about a similar issue, go to A contact is displayed with an incorrect picture and incorrect presence information in Lync 2010.

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