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-Integrated-4.0
Error Code   0x00000000
Requested URL   http://www.cbcm.org:80/%E4%B8%BB%E6%97%A5%E6%95%AC%E6%8B%9C/%E6%B4%9B%E5%9F%8E%E5%A0%82%E8%A1%8C%E4%BA%8B%E5%8E%86/tabid/134/ModuleID/494/ItemID/27015/mctl/EventDetails/language/zh-CN/Default.aspx
Physical Path   D:\APPS\cbcmDNN\webroot\%E4%B8%BB%E6%97%A5%E6%95%AC%E6%8B%9C\%E6%B4%9B%E5%9F%8E%E5%A0%82%E8%A1%8C%E4%BA%8B%E5%8E%86\tabid\134\ModuleID\494\ItemID\27015\mctl\EventDetails\language\zh-CN\Default.aspx
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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