I try to fix it in web.config "/CMSModules/Workflows/web.config" but it not work
<?xml version="1.0"?>
<configuration>
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="SecureHttpBinding">
<security mode="Transport" />
</binding>
</webHttpBinding>
</bindings>
<behaviors>
<endpointBehaviors>
<behavior name="WorkflowDesignerServiceBehavior">
<enableWebScript />
</behavior>
</endpointBehaviors>
</behaviors>
<services>
<service name="CMS.WebServices.WorkflowDesignerService">
<endpoint address="" behaviorConfiguration="WorkflowDesignerServiceBehavior" binding="webHttpBinding" contract="CMS.WebServices.IWorkflowDesignerService" />
<endpoint address="" behaviorConfiguration="WorkflowDesignerServiceBehavior" binding="webHttpBinding" bindingConfiguration="SecureHttpBinding" contract="CMS.WebServices.IWorkflowDesignerService" />
</service>
</services>
</system.serviceModel>
<system.web>
<authorization>
<deny users="?"/>
</authorization>
</system.web>
<location path="Services/WorkflowDesignerService.svc">
<system.web>
<authorization>
<deny users="?"/>
</authorization>
</system.web>
</location>
</configuration>