I have solved it. The problem was in app.config of WorkerRole project. My solution has 2 projects: ApplicationProject and WorkerRoleProject
I solve the problem copying the missing dependentAssembly in app.config in ApplicationProject to app.config in WorkerRoleProject
ApplicationProject - app.config:
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
<bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="log4net" publicKeyToken="669e0ddf0bb1aa2a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-1.2.13.0" newVersion="1.2.13.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
</dependentAssembly>
</assemblyBinding>
WorkerRoleProject project need the same dependentAssembly that ApplicationProject
That's All, Roger