HTTP Error 404.11 - Not Found

The request filtering module is configured to deny a request that contains a double escape sequence.

Most likely causes:

  • The request contained a double escape sequence and request filtering is configured on the Web server to deny double escape sequences.

Things you can try:

  • Verify the configuration/system.webServer/security/requestFiltering@allowDoubleEscaping setting in the applicationhost.config or web.confg file.

Detailed Error Information:

Module   RequestFilteringModule
Notification   BeginRequest
Handler   ExtensionlessUrlHandler-Integrated-4.0
Error Code   0x00000000
Requested URL   http://www.norg.nl:80/joomla/mailto:<script language='JavaScript' type='text/javascript'> <!-- var prefix = 'ma' + 'il' + 'to'; var path = 'hr' + 'ef' + '='; var addy66144 = 'info' + '@'; addy66144 = addy66144 + 'bibliotheeknorg' + '.' + 'nl'; document.write( '<a ' + path + '/'' + prefix + ':' + addy66144 + '/'>' ); document.write( addy66144 ); document.write( '</a>' ); /--> </script><noscript> Dit e-mailadres wordt beschermd tegen spam bots, u heeft Javascript nodig om het te bekijken</noscript>
Physical Path   D:\www\norg.nl\www\joomla\mailto:<script language='JavaScript' type='text\javascript'> <!-- var prefix = 'ma' + 'il' + 'to'; var path = 'hr' + 'ef' + '='; var addy66144 = 'info' + '@'; addy66144 = addy66144 + 'bibliotheeknorg' + '.' + 'nl'; document.write( '<a ' + path + '\'' + prefix + ':' + addy66144 + '\'>' ); document.write( addy66144 ); document.write( '<\a>' ); \--> <\script><noscript> Dit e-mailadres wordt beschermd tegen spam bots, u heeft Javascript nodig om het te bekijken<\noscript>
Logon Method   Not yet determined
Logon User   Not yet determined

More Information:

This is a security feature. Do not change this feature unless the scope of the change is fully understood. You should take a network trace before changing this value to confirm that the request is not malicious. If double escape sequences are allowed by the server, modify the configuration/system.webServer/security/requestFiltering@allowDoubleEscaping setting. This could be caused by a malformed URL sent to the server by a malicious user.

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