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/38400/%E5%85%B6%E5%AF%A6%EF%BC%8C%E9%80%99%E6%A8%A3%E9%96%8B%E6%9C%89%E9%BB%9E%E7%84%A1%E8%81%8A%E2%94%80Volvo%20V90%E8%88%87V90%20Cross%20Country%E8%A9%A6%E9%A7%95%E9%AB%94%E9%A9%97
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\38400\%E5%85%B6%E5%AF%A6%EF%BC%8C%E9%80%99%E6%A8%A3%E9%96%8B%E6%9C%89%E9%BB%9E%E7%84%A1%E8%81%8A%E2%94%80Volvo%20V90%E8%88%87V90%20Cross%20Country%E8%A9%A6%E9%A7%95%E9%AB%94%E9%A9%97
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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