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://racingandsports.cn:80/racing/%E3%80%8C%E7%B4%85%E8%A1%A3%E9%86%92%E7%A5%9E%E3%80%8D%E7%88%AD%E5%8F%96%E6%B5%AA%E7%90%B4%E8%A1%A8%E9%A6%99%E6%B8%AF%E7%9F%AD%E9%80%94%E9%8C%A6%E6%A8%99%E4%B8%89%E9%80%A3%E5%8B%9D-story-503818
Physical Path   C:\inetpub\wwwroot\racingandsports.cn\racing\%E3%80%8C%E7%B4%85%E8%A1%A3%E9%86%92%E7%A5%9E%E3%80%8D%E7%88%AD%E5%8F%96%E6%B5%AA%E7%90%B4%E8%A1%A8%E9%A6%99%E6%B8%AF%E7%9F%AD%E9%80%94%E9%8C%A6%E6%A8%99%E4%B8%89%E9%80%A3%E5%8B%9D-story-503818
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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