Question

I am getting this error:

Server Error in ‘/cms’ Application.

This collection already contains an address with scheme http. 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 Description: An unhandled exception occurred
during the execution of the current web request. Please review the
stack trace for more information about the error and where it
originated in the code.

Exception Details:

System.ArgumentException: This collection already contains an address with scheme http.  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

Source Error:

An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace below.

Stack Trace:

[ArgumentException: This collection already contains an address with scheme http.  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.ServiceModel.UriSchemeKeyedCollection.InsertItem(Int32 index, Uri item) [phone]
System.Collections.Generic.SynchronizedCollection`1.Add(T item) +79
System.ServiceModel.UriSchemeKeyedCollection..ctor(Uri[] addresses) +222
System.ServiceModel.ServiceHost..ctor(Type serviceType, Uri[] baseAddresses) +346
System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(Type
serviceType, Uri[] baseAddresses) +43
System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String
constructorString, Uri[] baseAddresses) +530
System.ServiceModel.HostingManager.CreateService(String normalizedVirtualPath) +1413
System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +50
System.ServiceModel.HostingManager.EnsureServiceAvailable(String
normalizedVirtualPath) +1172

[ServiceActivationException: The service '/cms/service.svc' cannot be activated due to an exception during compilation.  The exception

message is: This collection already contains an address with scheme
http. 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.Runtime.AsyncResult.End(IAsyncResult result) +901424
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult
result) +178702
System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult
ar) +107

——————————————————————————– Version Information: Microsoft .NET Framework Version:4.0.30319;
ASP.NET Version:4.0.30319.237

What am I doing wrong?

Answer 1

Is there a service with multiple endpoints in your web.config file? If there are multiple endpoints for a single service (In section), then only one endpoint can have no address attribute set. The other endpoints need to have the address setting.

From the client side, if you want to use the endpoint with the new endpoint address, you need to include it in the address, such as “http://localhost/cms/Service.svc/newEP”

http://msdn.microsoft.com/en-us/library/ms731320.aspx

http://msdn.microsoft.com/en-us/library/aa751841.aspx