Event ID 1000 (0xc0000005) and RtcSrv.exe of the SBA/SBS crashes after startup in Lync Server 2013

Applies to: Lync Server 2013


Consider the following scenario:

  • One or more Survivable Branch Appliances or Survivable Branch Servers (SBAs/SBSs) are deployed in a Microsoft Lync Server 2013 environment.
  • 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:


To fix this issue, install the July 2018 cumulative update 5.0.8308.1001 for Lync Server 2013, Front End Server and Edge Server.