Report Viewer Configuration Error in IIS 10

Question

I have my report viewer working perfectly on windows server 2012 (IIS 7) but when i moved the site to window server 2019 (IIS 10) it start showing the web.config error about config error. I went through related question here but most talk about IIS 7 and later solutions which seems not working despite trying solution here and the error message and my config are the same. error below

Report Viewer Configuration Error The Report Viewer Web Control HTTP Handler has not been registered in the application's web.config file. Add to the system.web/httpHandlers section of the web.config file, or add to the system.webServer/handlers section for Internet Information Services 7 or later.

Jalpa Panchal Jalpa Panchal · Accepted Answer · 2021-03-01T10:38:40

add below code to <system.web> section:

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

and this one under "system.webServer" section:

  <handlers>
    <!-- Add these lines -->
    <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
    <validation validateIntegratedModeConfiguration="false"/>
</handlers>

if still not work try to change the app pool from Integrated to Classic.

Report Viewer Configuration Error in IIS 10

1 Answers