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   PageHandlerFactory-ISAPI-2.0
Error Code   0x00000000
Requested URL   http://www.agenziastudioimmobiliare.com:80/Immobili/manerba-del-garda/337-vendita-villetta-in-piccolo-contesto-residenziale-con-piscina-composto-da-sole-7-unit%C3%A0-zona-tranquilla-a-due-passi-dal-lago.aspx
Physical Path   D:\inetpub\webs\agenziastudioimmobiliarecom\Immobili\manerba-del-garda\337-vendita-villetta-in-piccolo-contesto-residenziale-con-piscina-composto-da-sole-7-unit%C3%A0-zona-tranquilla-a-due-passi-dal-lago.aspx
Logon Method   Not yet determined
Logon User   Not yet determined
Request Tracing Directory   D:\LogFiles\FailedReqLogFiles

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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