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   Not yet determined
Error Code   0x00000000
Requested URL   http://www.beaurenard.fr:80/pages/pdf/presse/2009-2010/WS 2009-10 chat+ Rast.pdf
Physical Path   C:\inetpub\wwwroot\pages\pdf\presse\2009-2010\WS 2009-10 chat+ Rast.pdf
Logon Method   Not yet determined
Logon User   Not yet determined
Request Tracing Directory   C:\inetpub\logs\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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