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   ApiURIs-ISAPI-Integrated-4.0
Error Code   0x00000000
Requested URL   http://roadtest.u-car.com.tw:80/article/39219/%E6%8B%9A%E6%80%A7%E8%83%BD%E5%B0%B1%E5%88%A5%E7%82%BA%E9%9B%A3%E5%BD%BC%E6%AD%A4%EF%BC%8C%E8%B1%AA%E8%8F%AF%E8%88%92%E9%81%A9%E8%88%87%E5%85%A5%E6%89%8B%E5%83%B9%E5%8F%96%E5%8B%9D%E2%94%80%20Lexus%20NX%20200%E8%A9%A6%E9%A7%95
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\39219\%E6%8B%9A%E6%80%A7%E8%83%BD%E5%B0%B1%E5%88%A5%E7%82%BA%E9%9B%A3%E5%BD%BC%E6%AD%A4%EF%BC%8C%E8%B1%AA%E8%8F%AF%E8%88%92%E9%81%A9%E8%88%87%E5%85%A5%E6%89%8B%E5%83%B9%E5%8F%96%E5%8B%9D%E2%94%80%20Lexus%20NX%20200%E8%A9%A6%E9%A7%95
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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