Problem opening sharepoint 2010 site with sharepoint designer

The problem i am having is that i installed SharePoint 2010 and SharePoint designer 2010
If i try to open a site with the SharePoint designer it tries to open the site but gives a error.
in the event log is the following:

WebHost failed to process a request.

Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/11404313

Exception: System.ServiceModel.ServiceActivationException: The service ‘/_vti_bin/client.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.

Parameter name: item. —> System.ArgumentException: This collection already contains an address with scheme http. There can be at most one address per scheme in this collection.

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 System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(Type serviceType, Uri[] baseAddresses)

at System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses)

at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService(String normalizedVirtualPath)

at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath)

at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)

— End of inner exception stack trace —

at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)

at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath)

Process Name: w3wp

Process ID: 3464

In central admin i have checked all options. so it should be able to open it up.
further when i open internet explorer 8. default the security setting is on high and i can not change it to medium-high..
i now changed all settings by hand is there a setting somewhere to put the securtity setting to medium?

so 2 questions

1: sharepoint designer and 2 Internet explorer policy..

solution :

What happened I created a site and in IIS I made a new binding so there was default from sharepoint and this is a multiple binding which caused the error.


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