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.mauriziomiceli.com:80/%E5%A8%98%E3%81%8C%E5%89%8D%E5%90%91%E3%81%8D%E3%81%AB%E9%A0%91%E5%BC%B5%E3%81%A3%E3%81%A6%E3%81%84%E3%81%8F%E5%A7%BF%E3%82%92%E8%A6%8B%E3%81%A6%E6%88%90%E9%95%B7%E3%82%92%E6%84%9F%E3%81%98%E3%82%8B/
Physical Path   D:\inetpub\webs\redirect\%E5%A8%98%E3%81%8C%E5%89%8D%E5%90%91%E3%81%8D%E3%81%AB%E9%A0%91%E5%BC%B5%E3%81%A3%E3%81%A6%E3%81%84%E3%81%8F%E5%A7%BF%E3%82%92%E8%A6%8B%E3%81%A6%E6%88%90%E9%95%B7%E3%82%92%E6%84%9F%E3%81%98%E3%82%8B\
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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