: Also try, both under <system.webServer> : <validation validateIntegratedModeConfiguration="false"/> else it won't work because the Reporting Services handler invalidates this mode. then

@Holmes151

Also try, both under <system.webServer> :

<validation validateIntegratedModeConfiguration="false"/>


else it won't work because the Reporting Services handler invalidates this mode. then under <handlers>

<add name="Reserved-ReportViewerWebControl-axd" path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />


Obv substituting the above for your version 8. You will also have to uncomment what you did as it will expect it to be there. Old versions of Reporting Services handler are not really IIS7 aware.

Basically the handler needs to be registered in the IIS7 part of the web.config as well as the "classic" part.

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