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October 20, 2008 / kiranpatils

Web.config registration missing! The Telerik dialogs require a HttpHandler registration in the web.config file.

Problem:

Was getting this error with IIS7 and Telerik Dialog control. Which says that “Web.config registration missing! The Telerik dialogs require a HttpHandler registration in the web.config file.”

Solution:

Telerik guys says “When a web site is running under IIS7 Integrated mode, the web server searches the HttpHandler registrations under the <system.webServer> configuration section instead of the standard <system.web> configuration section of the application configuration file.”.

All you need to do to manually register the HttpHandler for the IIS7 Integrated mode is copy the Telerik HttpHandler to the <handlers> section of the <system.webServer> section group, delete the validate attribute and give it a name, e.g.

<system.webServer>
<handlers>
 …
<add name="Telerik.Web.UI.DialogHandler" path="Telerik.Web.UI.DialogHandler.aspx" verb="*" type="Telerik.Web.UI.DialogHandler, Telerik.Web.UI" />
 …
</handlers>
</system.webServer>

Thanks to : http://www.telerik.com/support/kb/article/b454K-hek-b454T-mb-b454c-mb.aspx

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