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   https://news.u-car.com.tw:443/article/63981/%E5%BF%AB%E5%85%8520%E5%88%86%E9%90%98%E7%BA%8C%E8%88%AA500%E8%8B%B1%E9%87%8C%EF%BC%8C%E9%9F%93%E5%9C%8BSK%E9%9B%86%E5%9C%98%E7%99%BC%E8%A1%A8%E6%96%B0%E9%9B%BB%E6%B1%A0%E6%8A%80%E8%A1%93
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\63981\%E5%BF%AB%E5%85%8520%E5%88%86%E9%90%98%E7%BA%8C%E8%88%AA500%E8%8B%B1%E9%87%8C%EF%BC%8C%E9%9F%93%E5%9C%8BSK%E9%9B%86%E5%9C%98%E7%99%BC%E8%A1%A8%E6%96%B0%E9%9B%BB%E6%B1%A0%E6%8A%80%E8%A1%93
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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