Question

I have a very strange issue. I am not able to run a windows azure application which has a WCF service and mschart in it.
Following are the steps to reproduce the error:
1) Create a new windowsazureapplication with a blank asp.net webrole
2) Now add a new WCfService
3) run to check it runs ok
4) now in one of the pages include mschart, and open the design of the page to make sure the webconfig is changed to use the mschart.
5) now try to run the project.
I am getting error message like this one:

Is this a problem with windows azure or am I doing somthing wrong?
FYI: This is not my first project on windows azure.

Answer 1

I think I have found the solution. You just need to add the following in your web.config inside system.webserver section:

<validation validateIntegratedModeConfiguration="false"/>

The final system.webserver looks like as below:

<system.webServer>
 <modules runAllManagedModulesForAllRequests="true" />
  <handlers>
   <remove name="ChartImageHandler" />
    <add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST"
    path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
  </handlers>
 <validation validateIntegratedModeConfiguration="false"/>
</system.webServer>

After adding above, I did not see the problem at all.