HTTP Error 404.11 - Not Found The request filtering module is configured to deny a request that contains a double escape sequence.IIS7





 

<system.webServer>
        <security>
            <requestFiltering allowDoubleEscaping="true">
            </requestFiltering>
        </security>
</system.webserver>

If your SEO friendly URL contains special characters as + or - and running under IIS7 , you 'll get

this error.

 

to solve this issue  , set allowDoubleEscaping to true in web.config file.