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CPU usage percentage of the RTCSrv.exe process is high on a Lync Server 2013 front-end server

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Symptoms

When this issue occurs on a Microsoft Lync Server 2013 front-end server, client users may encounter the following issues:
  • New users cannot sign in to the front-end server.
  • Users cannot complete instant message conversations. 
  • Users cannot join meetings that are hosted on the front-end server.
Additionally, when you restart the Front End service (RTCSrv.exe), the service freezes. 

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Resolution

To resolve this issue, install the July 2015 cumulative update 5.0.8308.920 for Lync Server 2013 (Front End Server and Edge Server).

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More Information

This issue occurs because of a race condition in the Front End service.

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Keywords: kbqfe, kbsurveynew, kbfix, kbexpertiseinter, kb

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Article Info
Article ID : 3070718
Revision : 1
Created on : 1/7/2017
Published on : 7/10/2015
Exists online : False
Views : 192