Symptoms
Consider the following scenario:
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One or more Survivable Branch Appliances or Survivable Branch Servers (SBAs/SBSs) are deployed in a Microsoft Skype for Business 2015 or Lync Server 2013 environment.
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The servers interact with a trusted application (typically UCMA-based) that queries the presence information for users who are homed on these SBAs/SBSs.
In this situation, when some users' presence information is queried, the Lync Server Front-End service (RtcSrv.exe) of the SBAs or SBSs starts but then crashes within about 20 seconds. Additionally, you receive an event that resembles the following:
Time: Date ID: 1000 Level: Error Source: Application Error Machine: MachineName Message: Faulting application name: RTCSrv.exe, version: VersionNumber, time stamp: TimeStamp Faulting module name: wsiphsh.DLL, version: VersionNumber, time stamp: TimeStamp Exception code: 0xc0000005 Fault offset: 0x0000000000005e2f Faulting process id: 0x420c Faulting application start time: Time Faulting application path: C:\Program Files\Skype for Business Server 2015\Server\Core\RTCSrv.exe Faulting module path: C:\Program Files\Skype for Business Server 2015\Server\Core\wsiphsh.DLL Report Id: ReportID Faulting package full name: Faulting package-relative application ID:
Resolution
To fix this issue, please install the following updates:
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For Skype for Business Server 2015, install the January 2019 cumulative update 6.0.9319.537, Front End Server and Edge Server.
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For Lync Server 2013, install the July 2018 cumulative update 5.0.8308.1001, Front End Server and Edge Server.
