The presence information for a Microsoft Office Communications Server user may not appear, or may appear intermittently in SharePoint. This behavior occurs when a user's Session Initiation Protocol (SIP) Uniform Resource Identifier (URI) does not match the user's primary e-mail address or when the user has multiple e-mail addresses.

The presence indicator on a SharePoint site uses the NAME.DLL ActiveX control installed by an Office client installation. The NAME.DLL provided by Office 2003 does not search for the user's SIP address to obtain the presence information. If a user's SIP proxy address and the user's default e-mail address are different the presence information cannot be shown.

To resolve this problem, follow these steps.

Step 1: Add a SIP proxy address in Exchange Server for the user account that specifies the user's SIP URI

Microsoft Exchange Server 2003

1. Open Active Directory User's and Computers.
2. Double-click the user.
3. Click the E-mail Addresses Tab.
4. Click New.
5. Click Custom Address. Type the SIP URI in the E-mail address field, and then type SIP in the E-mail type field.
6. Click OK two times.
7. Wait for the Active Directory directory service and Exchange to synchronize.

Exchange Server 2007 or Exchange Server 2010

By default, Exchange 2007 or Exchange 2010 can obtain a Communications Server user's SIP URI from Active Directory and populate the SIP proxy address automatically.

Step 2: Add two registry entries (Office 2003 SP2 or Office 2003 SP3)

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:

Note This step is not required for Office 2007.

By adding the following registry keys, you can help prevent a problem if these addresses are different.

1. Click Start, click Run, type regedit, and then press ENTER.
2. Locate the following registry subkey:
   HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Common\PersonaMenu
3. Click Edit, point to New, and then click DWORD value.
4. Type QueryServiceForStatus, and then click OK.
5. Double-click QueryServiceForStatus, type 2, and then click OK.
6. Click Edit, point to New, and then click DWORD value.
7. Type EnableDynamicPresence, and then click OK.
8. Double-click EnableDynamicPresence, type 1, and then click OK.
9. Exit Registry Editor.

After you create these registry keys and refresh the browser page, the presence information should be shown.

889938 The presence information for a Windows Messenger contact is not displayed correctly in Windows SharePoint Services or in Outlook

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