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The QueryCategory function in an MSPL script does not return the presence information in Lync Server 2010

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Symptoms

Consider the following scenario:
  • You deploy a custom application in the Microsoft Lync Server 2010 environment. You do this by installing a Microsoft SIP Processing Language (MSPL) script on the Lync Server 2010 front-end server. The MSPL script uses the QueryCategory function to verify the user status.
  • A Lync 2010 user invites another Lync 2010 user for an instant messaging session.
  • You verify the corresponding log in Event Viewer.
In this scenario, the log displays a warning message that states that the QueryCategory function returns a NULL value instead of the presence information as a string.

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Resolution

To resolve this issue, install the following cumulative update: 
2500442 Description of the update for Lync Server 2010: April 2011

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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Keywords: kbqfe, kbfix, kbhotfixrollup, kbsurveynew, kbexpertiseinter, kb

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Article Info
Article ID : 2538969
Revision : 2
Created on : 9/20/2018
Published on : 9/20/2018
Exists online : False
Views : 414