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   https://www.mceducation.com.hk:443/stemwp/%E7%AC%AC%E4%BA%8C%E5%B1%86%E6%85%88%E5%B9%BC%E7%9B%83%EF%BC%882016-2017%EF%BC%89%E6%9A%A8%E9%AB%98%E6%99%BA%E8%83%BD%E5%9B%9B%E9%A9%85%E8%BB%8A%E5%89%B5%E6%96%B0%E5%A4%A7%E8%B3%BD/
Physical Path   E:\www.marshallcavendish.com.hk\stemwp\%E7%AC%AC%E4%BA%8C%E5%B1%86%E6%85%88%E5%B9%BC%E7%9B%83%EF%BC%882016-2017%EF%BC%89%E6%9A%A8%E9%AB%98%E6%99%BA%E8%83%BD%E5%9B%9B%E9%A9%85%E8%BB%8A%E5%89%B5%E6%96%B0%E5%A4%A7%E8%B3%BD\
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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