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Service activation may fail when a pre-compiled WCF workflow service that is wrapped together with a .svc file is hosted

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This article helps you resolve the problem where the service activation may fail when a pre-compiled Windows Communication Foundation (WCF) workflow service that is wrapped together with a .svc file is hosted.

Original product version:   Windows Workflow Foundation 4.0
Original KB number:   2286155

Symptoms

When a pre-compiled WCF workflow service that is wrapped together with a .svc file is hosted, the service activation may fail with an exception error.

Cause

This problem may occur when the service path contains non-English characters. For example, the following service path may cause this problem:
application_name+directory_name+file_name

Workaround

To work around this problem, use configuration-based activation.

For example, consider that you have an application and a pre-compiled WCF workflow service such as CalculatorService that is wrapped together in the Service.svc file in the following way:

<% @ServiceHost
language=c#
Factory="System.ServiceModel.Activities.Activation.WorkflowServiceHostFactory,Service="CalculatorService"%>

When CalculatorService is hosted, the service activation may fail with an exception error.

To work around this problem, add a part that resembles the following example to the application to root Web.config file:

<System.serviceModel>
    <serviceHostingEnvironment>
        <serviceActivations>
            <add relativeAddress="~/service.svc" service="CalculatorService"
              factory="System.ServiceModel.Activities.Activation.WorkflowServiceHostFactory"/>
        </serviceActivations>
    </serviceHostingEnvironment>
</system.serviceModel>

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