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Log Name: Application
Source: System.ServiceModel 4.0.0.0
Date: 05/07/2025 00:18:47
Event ID: 3
Task Category: WebHost
Level: Error
Keywords: Classic
User: SYSTEM
Computer: EX2013.domain.local
Description:
WebHost failed to process a request.
Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/12547953
Exception: System.ServiceModel.ServiceActivationException: The service '/owa/service.svc' cannot be activated due to an exception during compilation. The exception message is: This collection already contains an address with scheme https. There can be at most one address per scheme in this collection. If your service is being hosted in IIS you can fix the problem by setting 'system.serviceModel/serviceHostingEnvironment/multipleSiteBindingsEnabled' to true or specifying 'system.serviceModel/serviceHostingEnvironment/baseAddressPrefixFilters'.
Parameter name: item. ---> System.ArgumentException: This collection already contains an address with scheme https. There can be at most one address per scheme in this collection. If your service is being hosted in IIS you can fix the problem by setting 'system.serviceModel/serviceHostingEnvironment/multipleSiteBindingsEnabled' to true or specifying 'system.serviceModel/serviceHostingEnvironment/baseAddressPrefixFilters'.
Parameter name: item
at System.ServiceModel.UriSchemeKeyedCollection.InsertItem(Int32 index, Uri item)
at System.Collections.Generic.SynchronizedCollection`1.Add(T item)
at System.ServiceModel.UriSchemeKeyedCollection..ctor(Uri[] addresses)
at System.ServiceModel.ServiceHost..ctor(Type serviceType, Uri[] baseAddresses)
at Microsoft.Exchange.Clients.Owa2.Server.Core.OWAServiceFactory.CreateOwaServiceHost(Uri[] baseAddresses)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
--- End of inner exception stack trace ---
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath, EventTraceActivity eventTraceActivity)
Process Name: w3wp
Process ID: 11336

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="System.ServiceModel 4.0.0.0" />
    <EventID Qualifiers="49154">3</EventID>
    <Level>2</Level>
    <Task>5</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2025-07-04T23:18:47.000000000Z" />
    <EventRecordID>33172</EventRecordID>
    <Channel>Application</Channel>
    <Computer>EX2013.domain.local</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data>System.ServiceModel.ServiceHostingEnvironment+HostingManager/12547953</Data>
    <Data>System.ServiceModel.ServiceActivationException: The service '/owa/service.svc' cannot be activated due to an exception during compilation.  The exception message is: This collection already contains an address with scheme https.  There can be at most one address per scheme in this collection. If your service is being hosted in IIS you can fix the problem by setting 'system.serviceModel/serviceHostingEnvironment/multipleSiteBindingsEnabled' to true or specifying 'system.serviceModel/serviceHostingEnvironment/baseAddressPrefixFilters'.
Parameter name: item. ---&gt; System.ArgumentException: This collection already contains an address with scheme https.  There can be at most one address per scheme in this collection. If your service is being hosted in IIS you can fix the problem by setting 'system.serviceModel/serviceHostingEnvironment/multipleSiteBindingsEnabled' to true or specifying 'system.serviceModel/serviceHostingEnvironment/baseAddressPrefixFilters'.
Parameter name: item
   at System.ServiceModel.UriSchemeKeyedCollection.InsertItem(Int32 index, Uri item)
   at System.Collections.Generic.SynchronizedCollection`1.Add(T item)
   at System.ServiceModel.UriSchemeKeyedCollection..ctor(Uri[] addresses)
   at System.ServiceModel.ServiceHost..ctor(Type serviceType, Uri[] baseAddresses)
   at Microsoft.Exchange.Clients.Owa2.Server.Core.OWAServiceFactory.CreateOwaServiceHost(Uri[] baseAddresses)
   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity)
   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
   --- End of inner exception stack trace ---
   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
   at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath, EventTraceActivity eventTraceActivity)</Data>
    <Data>w3wp</Data>
    <Data>11336</Data>
  </EventData>
</Event>
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