User-306750178 posted
Hi,
Aadd below tag to ur web.config
<add name="Reserved-ReportViewerWebControl-axd" path="Reserved.ReportViewerWebControl.axd"
verb="*" type="Microsoft.Reporting.WebForms.HttpHandler" resourceType="Unspecified"
/>
And make sure below thinks are done.
In IIS 7, we need to add Reserved.ReportViewerWebControl.axd httpHandler.
Resolution:
Open Internet Information Services (IIS) Manager and select your Web application.
Under IIS area, double-click on Handler Mappings icon.
At the Action pane on your right, click on Add Managed Handler.At the Add Managed Handler dialog, enter the following:
Request path: Reserved.ReportViewerWebControl.axd
Type: Microsoft.Reporting.WebForms.HttpHandler
Name: Reserved-ReportViewerWebControl-axdClick OK.
See this link:
http://otkfounder.blogspot.com/2007/11/solving-reportviewer-rendering-issue-on.html