Lync SBA & Response Groups

Hi
I have a SE Lync deployment with Enterprise voice.
All Lync services are in the primary site.
I am adding a SBA to the primary site for resilience and all users use this as their primary registrar and the FE as their backup registrar.
Inbound calls come in via ISDN cards on the SBA and go to response groups on the FE.
My question is that if the Lync FE server goes down and the SBA kicks in with limited Lync functionality how can I continue to process inbound calls that were going to the response groups?
Its my understanding that response groups don't survive a FE Lync outage.
My design goals must have the inbound numbers continue to work in the event of a FE failure
Thanks
Alan

Hi,
Response Group would not be available if branch site’s WAN connection to a central site fails or if the central site is unreachable. It will be available only if your resiliency solution is a full-scale Microsoft Lync Server 2010 deployment at the
branch site.
For details:
http://technet.microsoft.com/en-us/library/gg398715.aspx
Regards,
Kent Huang
TechNet Community Support ************************************************************************************************************************ Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a
marked post does not actually answer your question.

Similar Messages

Lync 2013 Response Group - timeout issues

I have an Lync 2013 Enterprise Pool deployment with three FE servers. For the Response Group configuration, the Group is setup as Informal, Alert Time 20 seconds, Routing method as Attendant with a single agent in it. The Queue is setup
with the Enable queue time out set to 20 seconds and forward call to voicemail to a sip user. The workflow is huntgroup with routing to Queue during business hours.
when I call from inside or outside, Lync call or PSTN call, the agent gets alerted for 20 seconds while the external caller hears music on hold, but after the 20 seconds, instead of going to voicemail, the call comes back to the agent and the caller hears
nothing for the next 20 seconds. after two separate 20 second ring cycles for the agent and 20 seconds of music and 20 seconds of dead air for the caller, the call is routed to Exchange UM.
Changing Alert Time or Queue Timeout has no impact on the above behavior (except for the amount of time a call rings during each cycle). Routing on queue timeout to another user or a number instead of voicemail also results in the same behavior.
I have tested the exact configuration on Lync 2013 Standard Edition and it works fine.
Anyone ran into similar issues with Lync 2013 Enterprise pool?

We just experienced the same issue today on a Lync 2013 Standard Edition server. I originally had the Agents set for Informal Participation, 10 second alert, and Attendant Routing method. The call would come in to the Response Group (either PSTN or internal...same
behavior) and ring all the users. The caller would hear hold music for 10 seconds while all Agents rang. Then the caller would hear silence while the callee's end would stop ringing for a second and then start ringing again (caller's end remains silent).
When I changed the routing method to Serial, I ended up with the same sort of function but broken down by user. So, the caller would hear hold music while the first Agent rang for 10 seconds. Then the caller would hear silence and the Agent's ringing would
stop momentarily and start again. The Queue has a 15 second limit before timeout, so it would timeout to an IVR (as configured) at that time. Because it is in production, I couldn't mess with things too much but I hope to test and make changes this evening
if needed.

[Lync 2013] Response groups : description size

Hi.
I have difficulties to create or modify groups, queues or workflows with no descriptions.
In the web interface, I can set whatever I want as a description for these objects, including empty description, but when I try to do the same using the powershell commands, I have errors.
For example, I first create a queue with the following command :
New-CsRgsQueue -Name 'MyName' -Parent 'service:ApplicationServer:LYNC2013Finale.ciscoad.lab' -Description $Null
I then change the description with the following commands :
$KURMI_GETQUEUE = Get-CsRgsQueue -Identity 'service:ApplicationServer:LYNC2013Finale.ciscoad.lab/ba74e783-71b6-4952-ade7-4afbf2599653';
$KURMI_GETQUEUE.Description = 'MyDescription';
Set-CsRgsQueue -Instance $KURMI_GETQUEUE;
Once again, it works correctly, but if I try later to empty the description I have an error :
$KURMI_GETQUEUE = Get-CsRgsQueue -Identity 'service:ApplicationServer:LYNC2013Finale.ciscoad.lab/ba74e783-71b6-4952-ade7-4afbf2599653';
$KURMI_GETQUEUE.Description = $Null;
Set-CsRgsQueue -Instance $KURMI_GETQUEUE;
The error (SetValueInvocationException) tells me that the minimal length of description is 1.
Il also tried to use the '' value, but the error is the same.
How can I empty a description ?

Or for short use [NullString]::Value
$KURMI_GETQUEUE.Description = [NullString]::Value;
Please mark posts as answers/helpful if it answers your question.
Blog
Lync Validator - Used to assist in the validation and documentation of Lync Server 2013.

Unable to connect as a formal agent to a Response Group after Migration to Lync 2013

We are in the process of migrating our Lync 2010 servers to Lync 2013. Everything seems to go well, but problems started to appear after we migrated the Lync 2010 response groups to Lync 2013. Now only those groups with informal agents work. All the groups
with formal agent, when they try select their group through the web page, they all get the error:
You are not a member of any group. For assistance, contact your support team"
Did anyone experience such an issue ?
Thanks,
Antonio

We had this problem with our recent migration of c. 350 response groups, many of which had formal agent groups. The cause appears to be that after the migration, the formal agent registration screen sees both the 'old' and the 'new' formal agent groups of
which the current user is a member and resolves these to only one entry on the registration screen (which is understandable). But the entry seems to be connected to the 'old' and not the 'new' agent group. We were able to verify this by checking in the old
and new pool database (rgsdyn) and seeing that even after the migration the formal agents were signing in to the old pool and not the new one. One solution is to delete the members from the old formal agent groups so that future registrations are forced to
take place in the new pool database. However, if you do this, bear in mind that if you have to back out the migration, you have to restore these.
We were also had to abandon one migration attempt because of another problem where the migration tool does not support the migration of agents who are defined indirectly in the agent group through a mail distribution group.
tags: Move-CsRgsConfiguration ; formal agent groups ; lync2013 ;

Lync response group stops after a while with receiving incomming calls

Hi Folks,
We have a strange issue with the response groups of Lync.
It seems that the response group randomly stops working, what means that the users can't receive their call trough the response groups.
Only the response group call(s) don't work, the pstn -> lync lync-> lync call just works fine.
The quick fix is to restart one of the Lync front end servers.
But, that is not really a solution.
The event viewer don't show anything about this problem. Also the Lync monitoring service don't show anything.
Sometimes restarting the Windows Lync response group services solves the problem, but most of the time we need to restart the whole server.
I'm curious some people has the same experience.
If you need more information about our deployment, please feel free to ask.

Hi,
I suggest you try to gather some logs on the Mediation server to see what is happening. Please use Lync logging tool and capture the data for S4
and then try to see if there are any errors after reporduce the problem.
Please try to enable logging tool to get detailed report:
http://blog.schertz.name/2011/06/using-the-lync-logging-tool/
http://technet.microsoft.com/en-us/library/gg558599.aspx
Regards,
Kent Huang
TechNet Community Support ************************************************************************************************************************ Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a
marked post does not actually answer your question.

Update response group membership on Lync.

Hi guys! Short question. I've updated the list of members in my AD group, which is used for calls routing. At about 10 minutes after the calls still flow to excluded members. How to force this update on Lync server?
Thank you!

Hi,
I have tried both commands, but my response Group using a Distribution List does not update.
I have found this in my event viewer:
Log Name:      Lync Server
Source:        LS Response Group Service
Date:          05-04-2013 12:57:56
Event ID:      31128
Task Category: (2001)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      LYNC-FE1.xxxx.dk
Description:
Data synchronization from Active Directory failed.
The following exception was thrown during the synchronization process:
Exception: System.Data.SqlClient.SqlException - Cannot insert duplicate key row in object 'dbo.Agents' with unique index 'IX_Agents_UserSid'.
The statement has been terminated.
Inner Exception: ~
The next synchronization attempt will be in 480 minutes.
Cause: Unhandled exception.
Resolution:
Verify the connectivity with the domain controller or if the Active Directory schema was properly applied and all user attributes are present.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
    <Provider Name="LS Response Group Service" />
    <EventID Qualifiers="51153">31128</EventID>
    <Level>2</Level>
    <Task>2001</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2013-04-05T10:57:56.000000000Z" />
    <EventRecordID>155606</EventRecordID>
    <Channel>Lync Server</Channel>
    <Computer>LYNC-FE1.xxxx.dk</Computer>
    <Security />
</System>
<EventData>
    <Data>System.Data.SqlClient.SqlException - Cannot insert duplicate key row in object 'dbo.Agents' with unique index 'IX_Agents_UserSid'.
The statement has been terminated.</Data>
    <Data>~</Data>
    <Data>480</Data>
</EventData>
</Event>
Any help would be much appreciated.

Precision for Capacity Planning for Response Group Lync 2010

Hi,
does anyone have
information on the following points:
Concurrent calls connected to IVR or MoH
480
60 --> I think that each FE can support 60 simultaneous calls on the MOH
Concurrent anonymous sessions (without IM)
224
28 --> I think that each FE can support 28 simultaneous calls on different RGS/agents
Active agents (formal and informal)
1200
1200 - -> It's the maximum of actives agents for RGS. But does I have to count 3 connections if a person is active for 3 RGS?
Thanks for your help
Marc

Concurrent calls connected to IVR or MoH > 480 that mean per enterprise pool it support 480 simultaneous call to IVR but enterprise pool must contain at least 8 Front End.
Concurrent anonymous sessions (without IM) > 224 same as previous, that mean enterprise pool support 224 simultaneous call on different agent.
Active agents (formal and informal) > 1200, It's the maximum of actives agents for RGS and yes, you will have 3 connection for 3 RGS.
Each hunt group is associated with a different Response Group application queue, but each queue is associated with the same agent group comprised of three agents. The total number of possible active agents on this Enterprise Edition pool is three (1 agent
group x 3 unique agents in that group).
Also you can refer below link
http://technet.microsoft.com/en-us/library/gg412754.aspx
http://blogs.technet.com/b/nexthop/archive/2012/09/24/lync-server-2010-response-group-application-frequently-asked-questions.aspx
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Lync 2013 Crashes When Transferring From Response Group

Hello,
Seeing a very strange issue on a couple of our clients running Lync 2013. Whenever they transfer a call from their response group Lync will crash. Calls into their direct line will transfer just fine. Here are two of the event logs we have
seen from this.
Faulting application name: lync.exe, version: 15.0.4569.1503, time stamp: 0x52b0bd5c
Faulting module name: mso.dll, version: 15.0.4569.1506, time stamp: 0x52e0dcca
Exception code: 0xc0000005
Fault offset: 0x0000000001828520
Faulting process id: 0x1550
Faulting application start time: 0x01cf4766655f5ead
Faulting application path: C:\Program Files\Microsoft Office\Office15\lync.exe
Faulting module path: C:\Program Files\Common Files\Microsoft Shared\Office15\mso.dll
Report Id: cbd75420-b38c-11e3-ae5c-0026b9dd72ee
Faulting application name: lync.exe, version: 15.0.4569.1503, time stamp: 0x52b0bd5c
Faulting module name: LyncDesktopViewModel.dll, version: 15.0.4569.1503, time stamp: 0x52b0c3a2
Exception code: 0xc0000005
Fault offset: 0x0000000000119795
Faulting process id: 0xee0
Faulting application start time: 0x01cf4757f9b12418
Faulting application path: C:\Program Files\Microsoft Office\Office15\lync.exe
Faulting module path: C:\Program Files\Microsoft Office\Office15\LyncDesktopViewModel.dll
Report Id: 9db0d18d-b359-11e3-ae5c-0026b9dd72ee
We have tried a number of things this to get this working, but nothing has worked.
Installed Office 2013 SP1
Completely re imaged the client's computers
Deployed new Polycom Lync phones
Completely removed clients from their response group and the Lync server and added them back
I'm not sure where to go from here or what might be causing this. I would appreciate any thoughts you might have. Thank you!

By default, calls from Response Groups ignore call forwarding or simultaneous ring settings.
Lisa Zheng
TechNet Community Support

Lync 2013 Attendant Response Group - Long Delay - Error ID 45019 LS Inbound Routing

Hello,
We have a customer who's using Lync Server 2013 with Response Groups and the SamRoxx Attendant Client. They are getting an error whereby calls made directly to users come through instantly, however attendants who take a call via the Response Group
get a 10 second delay. We are seeing
Error ID 45019 LS Inbound Routing
User ***@***.com provided a routing document with errors.
Default call handling was applied instead. Merge conflict. Wait total present in both preambles.
Problems with this user's routing documents will not be reported again for another hour.
Cause: A new or experimental user agent my have published a routing document with errors.
Resolution:
Replace the user agent that published the defective configuration.
Has anyone seen this before??
Thanks
Lync Tips Blog - [email protected] - If this post has been useful please click the green arrow to the left or click 'Propose as answer'

Hi tomcotton,
You can try steps below to troubleshoot the problem.
1. Remove the affected Lync user from the Response Group and test whether the error persists.
2. I’m not aware of
the SamRoxx Attendant Client, can you use Lync 2013 client to test and check ?
Best regards,
Eric
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Lync Response Group Manager - cannot change opening hours

Hi all
I've run into an odd problem with Lync Response Groups with Lync 2013 Server. Just wondering if anyone has seen this before or knows of a solution. I've searched around but can't find any reference to this particular problem.
Response supervisors who are defined in the workflow and are a member of the AD group CSResponseGroupManager cannot change working hours for their response group from a custom schedule to a preset in the web interface.
If the workflow is already set to preset they can switch between existing presets, and they can switch from preset to custom. But once it has been set to custom they cannot change it back to preset.
They can select to do so but when they click Save they receive an error on the page saying "The term 'Remove-CsRgsHoursOfBusiness' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name,
or if a path was included, verify that the path is correct and try again."
I don't believe this is by design, why would you want a workflow manager to be able to switch between presets or to custom but not back again?
If they are a member of CSResponseGroupAdministrator this works, however this is not really a solution as members of this group can edit all workflows and we don't want the managers of a workflow for one department able to access the workflows of another.
Any information greatly appreciated.

Hi
I had to abondon working on this for a while as we only had 1 Response Group in place, it wasn't too much hassle for me to do these changes myself.
However we now have about 6 Response Groups. All are managed and have a user listed as manager in the workflow, that user is also in the CSResponseGroupManager AD user group.
As previously described they can change the opening hours from between existing presets, and from preset to custom, but attempting to change back to preset from custom causes the error given previously.
This does not occur if the user is a member of CSResponseGroupAdministrator, however putting our Response Group managers in this group is not appropriate as it gives them access to all Response Groups not just their own.
Is it possible the error is due to the fact that the CSResponseGroupManager group is not giving them permission to the Remove-CSRGSHoursofBusiness cmdlet, I think PowerShell tells you a cmdlet doesn't exist if you don't have permissions to use it?

Lync Response group call issues

Hi all,
I am trying to investigate an issue with incoming calls.
I would like to know who ended the call. Was it the caller or the callee.
How can I find this in Lync reports?
Thanks,

Here's a query that will need some work, but might help get you there.
Note that it's currently locked to a date range. You can modify that. I'd make a couple of calls to your response group, one where you hang up, and one where you have them hang up on you.
Run the query. Find your calls, find the ReferredById number that matches your response group. In my case it was 10091, so I added the line "and SessionDetails.ReferredById='10091'" just before the "order by".
Now the query returns your response group calls. The diagnosticID will help you determine who hung up, or you can just add the VoIPDetails record you found as the join is in the query already.
select
(Select UserUri from Users where UserId = SessionDetails.User2Id ) as Caller,
SessionDetails.DiagnosticId,
(SELECT PhoneUri FROM Phones WHERE PhoneId = VoipDetails.FromNumberId) as MyFromNumberId,
(SELECT PhoneUri FROM Phones WHERE PhoneId = VoipDetails.ConnectedNumberId) as ConnectedNumberId,
(Select UserUri from Users where UserId = SessionDetails.User1Id ) as Agent,
(Select UserUri from Users where UserId = SessionDetails.ReferredById ) as ResponseGroup,
(SELECT DATEDIFF(SECOND, SessionDetails.SessionIdTime,SessionDetails.SessionEndTime)) As TalkTime,
SessionDetails.* from SessionDetails
LEFT OUTER JOIN dbo.VoipDetails
ON VoipDetails.SessionIdTime = SessionDetails.SessionIdTime
AND VoipDetails.SessionIdSeq = SessionDetails.SessionIdSeq
where SessionDetails.SessionIdTime > '2014-10-08' and SessionDetails.SessionIdTime < '2014-10-10'
order by SessionIdTime
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SWC Unified Communications
This forum post is based upon my personal experience and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

Is there a way to tell who answered a call to a Lync response group?

We have Lync 2010 and a number of Response groups defined. These are rung by the public from outside lines.
We would like to be able to identify who is answering these calls. However the records that are being populated in the Lync LCSCDR database only seem to reflect that their was a call to the response group, not who then took the call.
Does the LYnc database also store the user who answered the call ?
Is this something that can be configured ?
We have tried running queries like the one below, which seems to indicate that its only the response group userid is kept in the call record.
USE LCSCDR
GO
Select sd.SessionIdTime, sd.SessionEndTime,
DATEDIFF(ss,sd.SessionIdTime,ISNULL(sd.SessionEndTime,sd.SessionIdTime)) AS duration,
ph1.PhoneUri as caller1,
ph2.PhoneUri as receiver1,
U1.UserUri as user1uri, U2.UserUri as user2uri, U3.UserUri as refeereruri,
sd.User1Id, sd.User2Id,sd.ReferredById,sd.IsUser1Internal, sd.IsUser2Internal,
sd.SessionIdTime, voipd.*, '|||',sd.*
From dbo.VoipDetails as voipd
INNER Join dbo.SessionDetails as sd on
(voipd.SessionIdTime = sd.SessionIdTime and
voipd.SessionIdSeq = sd.SessionIdSeq )
LEFT OUTER JOIN dbo.Users as U2
ON U2.UserId = sd.User2Id
LEFT OUTER JOIN dbo.Users as U1
ON U1.UserId = sd.User1Id
LEFT OUTER JOIN dbo.Users as U3
ON U3.UserId = sd.ReferredById
LEFT OUTER JOIN dbo.Phones as ph1
ON ph1.PhoneId = voipd.FromNumberId
LEFT OUTER JOIN dbo.Phones as ph2
ON ph2.PhoneId = voipd.ConnectedNumberId
where sd.SessionIdTime > (GETDATE() - 2)
and sd.MediaTypes = 16
and voipd.FromGatewayId is not null -- external
and User1Id is null

The calls will have the same CorrelationId.
If you have for example C1 calling RG1.
In turn you will see C1 calling A1, and C1 calling A1. These are the response group calls to each agent.
All 3 of these calls will share the same CorrelationId. Likewise you can check the Response code to see which Agent call had a 200.
There will also be a 4th call from AX to C1, and AX will be whomever took the call. The ReplacesDialogIdTime will associate the replacement call back to the original call in.
So something like this should work
SELECT *
FROM [LcsCDR].[dbo].[SessionDetails] WHERE
ReplacesDialogIdTime = ANY
(SELECT sd.SessionIdTime
FROM [LcsCDR].[dbo].[SessionDetails] as sd
LEFT OUTER JOIN [LcsCDR].[dbo].[Users] as u1
ON u1.UserId = sd.User1Id
LEFT OUTER JOIN [LcsCDR].[dbo].[Users] as u2
ON u2.UserId = sd.User2Id
WHERE u1.UserUri = '[email protected]' and u2.UserUri = '[email protected]')

Response Group: A network-related or instance-specific error occurred while establishing a connection to SQL Server.

Hi all,
I have three central sites with each having a Front End server pool (standard).
Site A and Site B are paired for resiliency. Site C is on its own.
On two of my Front Ends (Site A and Site B), when I click on response group tab i get the following warning on the top of the page:
"A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.
(provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)"
I have check out the following articles about dont think they apply to me:
http://unifiedme.co.uk/2014/01/network-related-instance-specific-error-occurred-accessing-lync-control-panel-response-group-tab/
I dont see any Event logs that would direct me to a cause.
Which database it is complaining about? RGSDYN and RGSCONFIG are local databases as it is an standard installation. What could be the possible cause for this issue?
Thanks in advance.

My latest change was the addition of Site C.
Going through logs (i must have missed it the first time, with all the noisy EWS errors), i found event ID 31147. I am investigating network issues although I have MPLS running to that location.
Does Lync set up open correct ports on the machine itself?

Cannot upload music file in Response Group Workflow

Hi Support,
This is multi site deployment. 3 site Lync 2013 Enterprise Edition, site A, B and C.
I'm creating Hunt Group via Response Groupconfiguration tool in Site A.
when I try to upload the music file for 'after business hour message' and 'music on hold' it prompt with error
"the file was not uploaded. An error occurred while trying to upload the file.
The file may be too big"
but I can upload the music file in Site B and C Response Group Workflow using the same file, Verified by test the Hunt Group and its working.
Detail music file:
afterofficehour.wav 1.52MB
musiconhold.wav 1.92MB
Detail Lync Share folder:
Right: everyone - Read/Write
\\LyncShare-A\1-ApplicationServer-1\AppServerFiles\rgs\temp
\\LyncShare-B\1-ApplicationServer-1\AppServerFiles\rgs\temp
\\LyncShare-C\1-ApplicationServer-1\AppServerFiles\rgs\temp
Any Idea on this issue?

Hi,
below is the recommendation for the MOH file for RGS,
All wave files must meet the following requirements
8-bit or 16-bit file
Linear pulse code modulation (LPCM), A-Law, or mu-Law format
Mono or stereo
4MB or less
For the best performance of wave files, a 16 kHz, mono, 16-bit Wave file is recommended.
get a file converted to above specs and upload. it should work.
Z-Hire -- Automate Lync User Account creation process ( AD / Exchange / Lync )

Response Group Service stops repeatedly.

Hi,
We have a 3 node Lync 2013 FE pool, running on Windows 2012 R2 Datacenter.
The response group service on all nodes stops periodically at different times. Obviously once all the pool members have stopped this service the Response Groups no longer function. We see the following events in the logs that show the issue:
Log Name: Lync Server
Source: LS Application Server
Date: 1/20/2015 4:07:06 AM
Event ID: 32007
Task Category: (1055)
Level: Error
Keywords: Classic
User: N/A
Computer: xxxxxxxx
Description:
The Application Host stopped due to an unhandled exception in the application.
The Application Host received an unhandled exception while running application urn:application:RGS. Exception information: Exception: System.Reflection.TargetInvocationException
> Message: Exception has been thrown by the target of an invocation.
> StackTrace: at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at Microsoft.Rtc.ApplicationServerCore.EventQueueEntry.ExecutionContextRunCallback(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at Microsoft.Rtc.ApplicationServerCore.EventQueueEntry.InvokeEvent(Boolean executingSynchronously, EventSerializer serializer)
at Microsoft.Rtc.ApplicationServerCore.EventSerializer.ProcessEvent(Boolean executingSynchronously, EventQueueEntry entry)
at Microsoft.Rtc.ApplicationServerCore.EventSerializer.ProcessEvents(EventQueueEntry entry)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
> Source: mscorlib
> HResult: -2146232828
Inner Exception: System.NullReferenceException
> Message: Object reference not set to an instance of an object.
> StackTrace: at Microsoft.Rtc.Acd.MatchMaking.CallHandler.StopQueueTimer()
at Microsoft.Rtc.Acd.MatchMaking.CallHandler.RouteToAnotherQueue(QueueCallHandler currentQueue, QueueCallHandler newQueue)
at Microsoft.Rtc.Acd.MatchMaking.CallHandler.RouteCallOnQueueTimeout(QueueCallHandler currentQueue)
at Microsoft.Rtc.Acd.MatchMaking.CallHandler.OnStateTimerExpired()
at Microsoft.Rtc.Acd.MatchMaking.AgentPresenceManager.OnTimerExpired(Object sender, TimerExpiredEventArgs args)
at Microsoft.Rtc.Acd.MatchMaking.PresenceProvider.EventQueue.OnExecuteWorkItem(QueueWorkItem workItem)
> Source: Microsoft.Rtc.Acd.MatchMaking
> HResult: -2147467261
Cause: Unhandled exception.
Resolution:
Check the events prior to this to resolve the unhandled exception.
Log Name: Lync Server
Source: LS Application Server
Date: 1/20/2015 4:07:06 AM
Event ID: 32002
Task Category: (1055)
Level: Information
Keywords: Classic
User: N/A
Computer: xxxxxxxxxx
Description:
The Application Host has stopped an application.
The Application Host has stopped application RTCRGS
Log Name: Lync Server
Source: LS Response Group Service
Date: 1/20/2015 4:07:06 AM
Event ID: 31207
Task Category: (2001)
Level: Error
Keywords: Classic
User: N/A
Computer: xxxxxxxxxx
Description:
An unhandled exception was encountered in Response Group Service.
Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Rtc.Acd.MatchMaking.CallHandler.StopQueueTimer()
at Microsoft.Rtc.Acd.MatchMaking.CallHandler.RouteToAnotherQueue(QueueCallHandler currentQueue, QueueCallHandler newQueue)
at Microsoft.Rtc.Acd.MatchMaking.CallHandler.RouteCallOnQueueTimeout(QueueCallHandler currentQueue)
at Microsoft.Rtc.Acd.MatchMaking.CallHandler.OnStateTimerExpired()
at Microsoft.Rtc.Acd.MatchMaking.AgentPresenceManager.OnTimerExpired(Object sender, TimerExpiredEventArgs args)
at Microsoft.Rtc.Acd.MatchMaking.PresenceProvider.EventQueue.OnExecuteWorkItem(QueueWorkItem workItem)
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at Microsoft.Rtc.ApplicationServerCore.EventQueueEntry.ExecutionContextRunCallback(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at Microsoft.Rtc.ApplicationServerCore.EventQueueEntry.InvokeEvent(Boolean executingSynchronously, EventSerializer serializer)
at Microsoft.Rtc.ApplicationServerCore.EventSerializer.ProcessEvent(Boolean executingSynchronously, EventQueueEntry entry)
at Microsoft.Rtc.ApplicationServerCore.EventSerializer.ProcessEvents(EventQueueEntry entry)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
Cause: Internal error in Response Group Service.
Resolution:
Restart the service. If the problem persists contact product support.
Log Name: Application
Source: .NET Runtime
Date: 1/20/2015 4:07:06 AM
Event ID: 1026
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: xxxxxxxxxxxx
Description:
Application: OcsAppServerHost.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Reflection.TargetInvocationException
Stack:
at Microsoft.Rtc.ApplicationServerCore.EventSerializer.ProcessEvents(Microsoft.Rtc.ApplicationServerCore.EventQueueEntry)
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
Log Name: Application
Source: Application Error
Date: 1/20/2015 4:07:07 AM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: xxxxxxxxxx
Description:
Faulting application name: OcsAppServerHost.exe, version: 5.0.8308.0, time stamp: 0x5050e359
Faulting module name: KERNELBASE.dll, version: 6.3.9600.16656, time stamp: 0x5318237f
Exception code: 0xe0434352
Fault offset: 0x00000000000043c8
Faulting process id: 0x3cbc
Faulting application start time: 0x01d033d48b291c99
Faulting application path: C:\Program Files\Microsoft Lync Server 2013\Application Host\OcsAppServerHost.exe
Faulting module path: C:\Windows\system32\KERNELBASE.dll
Report Id: b4e25672-a083-11e4-80ce-005056b06583
Faulting package full name:
Faulting package-relative application ID:
I initially though this may be due to AV scanning but this has been disproved. Please assist me with troubleshooting this issue.
thanks
Chris

Hi,
Please make sure CMS replication update to the latest status.
Try to install the latest update for Lync Server and reboot the server.
Best Regards,
Eason Huang
Eason Huang
TechNet Community Support

Lync SBA & Response Groups

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