Symptoms

A Lync 2010 user who has only instant message (IM), and presence enabled double-clicks a contact to open a conversation window. In this situation, the user receives the following notification message:

Audio Join

As you selected, meeting audio was not automatically joined to this meeting. You can dial in using any phone or click the Call button to add audio. You can change your default audio join settings in Options under phones.


Cause

This issue occurs because an audio conference property is invoked unexpectedly when a conversation is initialized. Therefore the notification message is displayed when no audio device is detected.

Resolution

To resolve this issue, install the following cumulative update:

2571543 Description of the cumulative update package for Lync 2010: July 2011

More Information

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 How to back up and restore the registry in Windows
To configure a Lync 2010 user to only have IM and presence enabled, use one of the following methods:

  • Run the following command in Lync Server Management Shell.

    Set-CsUser -Identity UserIdParameter -AudioVideoDisabled $trueFor more information about the Set-CsUser command, visit the following Microsoft website:

    General information about the Set-CsUser command

  • Follow these steps:

    1. Click Start, click Run, type regedit in the Open box, and then click OK.

    2. Locate and then click the following registry subkey:

      HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Communicator

    3. Click the Edit menu, point to New, and then click DWORD Value.

    4. Name the new value TelephonyMode.

    5. Right-click TelephonyMode, and then click Modify.

    6. Under Base, click Decimal.

    7. In the Value data box, type 5, and then click OK.

    8. Exit Registry Editor.


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