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   StaticFile
Error Code   0x00000000
Requested URL   http://www.kn.kcchip.com:80/category/%E0%B2%96%E0%B2%97%E0%B3%86%E0%B3%82%E0%B3%95%E0%B2%B3%E0%B2%B5%E0%B2%BF%E0%B2%9C%E0%B3%8D%E0%B2%9E%E0%B2%BE%E0%B2%A8-%E0%B2%AE%E0%B2%A4%E0%B3%8D%E0%B2%A4%E0%B3%81-%E0%B2%B8%E0%B3%8D%E0%B2%AA%E0%B3%86/
Physical Path   C:\inetpub\wwwroot\windowsapi\public\category\%E0%B2%96%E0%B2%97%E0%B3%86%E0%B3%82%E0%B3%95%E0%B2%B3%E0%B2%B5%E0%B2%BF%E0%B2%9C%E0%B3%8D%E0%B2%9E%E0%B2%BE%E0%B2%A8-%E0%B2%AE%E0%B2%A4%E0%B3%8D%E0%B2%A4%E0%B3%81-%E0%B2%B8%E0%B3%8D%E0%B2%AA%E0%B3%86\
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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