Recieving Error Viewing Reports in Report Manager

Question

I am receiving the following error trying to view a report in Report Manager and Reporting Services:  "
Your browser does not support scripts or has been configured not to allow scripts"  I have ensured that scripting is enabled and added the site to my trusted sites and still does not work.  What am I missing?  I am using SQL Server 2008
R2.  My reports work fine in a test windows application, but not in the browser.
I can see the header and footer of the report and the toolbar, but the body is empty.  It's only when I select view source that I see the error.
Here is the complete error when I View Source:
<noscript>
&nbsp;Your browser does not support scripts or has been configured not to allow scripts.
</noscript><span id="ctl31_ReportViewer"><div id="ctl31" onclick="if ($get('ctl31_ctl04') != null &amp;&amp; $get('ctl31_ctl04').control != null) $get('ctl31_ctl04').control.HideActiveDropDown();" onactivate="if ($get('ctl31_ctl04') != null &amp;&amp; $get('ctl31_ctl04').control != null) $get('ctl31_ctl04').control.HideActiveDropDown();" style="height:100%;width:100%;">
<div id="ctl31_HttpHandlerMissingErrorMessage" style="border-color:Red;border-width:2px;border-style:Solid;padding:10px;display:none;overflow:auto;font-size:.85em;">
<h2>
Report Viewer Configuration Error
</h2><p>The Report Viewer Web Control HTTP Handler has not been registered in the application's web.config file. Add &lt;add verb=&quot;*&quot; path=&quot;Reserved.ReportViewerWebControl.axd&quot; type = &quot;Microsoft.Reporting.WebForms.HttpHandler, ReportingServicesWebUserInterface, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91&quot; /&gt; to the system.web/httpHandlers section of the web.config file, or add &lt;add name=&quot;ReportViewerWebControlHandler&quot; preCondition=&quot;integratedMode&quot; verb=&quot;*&quot; path=&quot;Reserved.ReportViewerWebControl.axd&quot; type=&quot;Microsoft.Reporting.WebForms.HttpHandler, ReportingServicesWebUserInterface, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91&quot; /&gt; to the system.webServer/handlers section for Internet Information Services 7 or later.</p>
I even get these errors in a test web application, even though scripting is enabled and my httpHandlers are defined in my web config for both system.web and system.webserver.

Answer 1

Hi Christie Tremblay,
Based on your description, you are experiencing the issue when you trying to view a report in Report Manager and Report Server, you got the error message ”Your browser does not support scripts or has been configured not to allow scripts” and “The Report
Viewer Web Control HTTP Handler has not been registered in the application's web.config file”, but the report work fine in the test in the test windows application, right?
If you use IIS 7.0 in Integrated mode, you must keep the HTTP handler that applies to your IIS version in its respective section. If you remove or modify the HTTP handler configuration settings, the ReportViewer Web server control in your Web form will display
the error message ”The Report Viewer Web Control HTTP Handler has not been registered in the application's web.config file” that tells you to add it back to the respective section in the web.config file.
In your scenario, the issue may occur due to one of the following factors:
Incorrect Web.config settings for ReportViewer control
Incorrect report path typed into the ReportViewer control
Improper Managed pipeline mode of the Application Pool
Open the IIS Manager, verify the Managed pipeline mode is set to Classic not Integrated.
For the error “your browser does not support scripts or has been configured not to allow scripts” can be caused by the browse you are using not support to open the Report Server and Report Manager: 
http://msdn.microsoft.com/en-us/library/ms156511(v=sql.105).aspx
Article about details information for your reference:
Verify the Web.config settings for ReportViewer:
http://msdn.microsoft.com/en-us/library/ms251661(v=vs.100).aspx
If the Report Viewer control is configured to run in remote processing mode, please ensure the report server URL or the report path are correct. For more information, please see:
http://msdn.microsoft.com/en-us/library/ms252075(v=vs.100).aspx
Similar threads which already resolved for your reference:
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/e515595c-7c63-4852-a9c4-bc4254341453/report-viewer-controls-are-disabled?forum=sqlreportingservices
https://shahjadatalukdar.wordpress.com/2013/08/05/rdlc-web-config-settings-for-reportviewer/
If you still have any question, please feel free to ask.
Regards
Vicky Liu