Report Viewer problem after moving to new server

asp.netiis-7reportviewer

I have just moved a site from a Windows 2003, IIS6 SQL 2005 server to a new one with Windows 2008, IIS7 and SQL 2008.

I am having problems with the Report Viewer.
I have installed the Report Viewer Re-distributable (I've tried 2005, 2005sp, 2008 and 2008sp)
I've Mapped a handler in IIS for

Reserved.ReportViewerWebControl.axd

to type

Microsoft.Reporting.WebForms.HttpHandler,
Microsoft.ReportViewer.WebForms,
Version=8.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a

However whenever I run a report on the website I get the following error message:

Could not load type 'Microsoft.Reporting.Microsoft.Reporting.WebForms.HttpHandler' from assembly 'Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.TypeLoadException: Could not load type 'Microsoft.Reporting.Microsoft.Reporting.WebForms.HttpHandler' from assembly 'Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

I am stumped. Any ideas?

Best Answer

I think you need to map to version 9.0.0.0 and not 8.0.0.0

Related Solutions

Asp.net-mvc – Asp.net MVC ReportViewer ,IIS 7 issue

Here's what we have - it should support both IIS 6 and IIS7+ I think you've got a reference to v9 of Reserved.ReportViewerWebControl.axd (Reporting Services 2005)

<system.web>
    <compilation debug="true" targetFramework="4.0">
        <assemblies>
                                <etc />
            <add assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
            <add assembly="Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
        </assemblies>
                        <!-- Edit Unsure as to whether this is needed, or should be Microsoft.ReportViewer.Webforms. Was upgraded from RDLC v9 -->
        <buildProviders>
            <add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
        </buildProviders>
    </compilation>


    <!-- NB : The below is for earlier IIS -->
    <httpHandlers>
        <add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="true"/>
    </httpHandlers>

</system.web>
<system.webServer>
    <!-- NB : The below is for IIS 6+ W2008 Server / Vista -->
    <handlers>
        <add name="Reserved-ReportViewerWebControl-axd" path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" resourceType="Unspecified" preCondition="integratedMode"/>
    </handlers>
</system.webServer>

Edit : Note that as of v10 the RdlBuildProvider is now in Microsoft.ReportViewer.WebForms not in Microsoft.ReportViewer.Common

Report Viewer Configuration Error

Try to add the following sections,

<add verb="*" path="Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

to system.web in section handlers

and add the following sections

<add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

to system.webserver in section handlers

Actually the error message explains everything! Hope it helps.

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