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Microsoft Lync audio/video conferencing not working

Posted on 2014-09-14
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Last Modified: 2014-09-14
My Lync 2010 FE server is having problems starting its audio and video conferencing services. It saying it is dependent on the CNG key isolation services.  I have been looking at the forums and it seems it is certificate related in some form.  I removed all the latest patches that were done on the machines. As this took place after a updates were done.  I have looked at the certificates and they seem fine.

This is the error that is thrown when I try to restart.  It seems to be pointing to a certificate issue.


Unexpected error occurred in the LS Audio/Video Authentication service.

Exception: System.UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
   at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
   at System.Reflection.Assembly.InternalGetSatelliteAssembly(CultureInfo culture, Version version, Boolean throwOnFileNotFound)
   at System.Resources.ResourceManager.GetSatelliteAssembly(CultureInfo lookForCulture)
   at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo culture, Boolean createIfNotExists, Boolean tryParents)
   at System.Resources.ResourceManager.GetString(String name, CultureInfo culture)
   at Microsoft.Rtc.Management.ClientDllResources.LogicalCertificateFormatString(Object insert0, Object insert1, Object insert2, Object insert3)
   at Microsoft.Rtc.Management.ServiceConsumer.CertificateExpiryTracker.GetCertificatesListString(Dictionary`2 currentState, CertificateExpiryStatus certStatusFilter)
   at Microsoft.Rtc.Management.ServiceConsumer.CertificateExpiryTracker.ProcessCertificateStatusChanged(CertificateExpirationEventArgs e, AllCertificatesRenewedCallback allCertificatesRenewedCallback, CertificateRenewedCallback certificateRenewedCallback, CertificateAboutToExpireCallback certificateAboutToExpireWarningCallback, CertificateAboutToExpireCallback certificateAboutToExpireErrorCallback, CertificateExpiredCallback certificateExpiredCallback)
   at Microsoft.Rtc.MRAS.Configuration.OnCertificateStatusChanged(Object sender, CertificateExpirationEventArgs e)
   at Microsoft.Rtc.Management.ServiceConsumer.CertificateExpiryTracker.HandleCertificateStatusChanged(CertificateExpiryStatus expiryStatus, CertificateExpirationData expirationData)
   at Microsoft.Rtc.Management.ServiceConsumer.LogicalCertExpiryTracker.OnCertificateStatusChanged(CertificateExpiryStatus certificateExpiryStatus, CertificateExpirationData certExpiryData)
   at Microsoft.Rtc.Management.ServiceConsumer.LogicalCertExpiryTracker.RaiseNotification()
   at Microsoft.Rtc.Management.ServiceConsumer.LogicalCertExpiryTracker.TrackCertificateCallback()
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading._TimerCallback.PerformTimerCallback(Object state)
Cause: An unexpected error has occurred.
Resolution:
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Question by:scusack
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by:scusack
ID: 40322027
I have gone in to the Lync Server Deployment Wizard and checked out my certificates and they look to be fine. One is expiring in three days though but that shouldn't affect this I would assume.  I am renewing it to see if this resolves the problem now.
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