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/45331/2019%E5%BE%B7%E5%9C%8BiF%E8%A8%AD%E8%A8%88%E5%A4%A7%E7%8D%8E%EF%BC%8CPalisade%E8%88%87Le%20Fil%20Rouge%20Concept%E7%9A%84%E6%9C%AA%E4%BE%86%E6%84%9F%E7%82%BAHyundai%E6%8B%BF%E4%B8%8B%E7%8D%8E%E5%BA%A7
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\45331\2019%E5%BE%B7%E5%9C%8BiF%E8%A8%AD%E8%A8%88%E5%A4%A7%E7%8D%8E%EF%BC%8CPalisade%E8%88%87Le%20Fil%20Rouge%20Concept%E7%9A%84%E6%9C%AA%E4%BE%86%E6%84%9F%E7%82%BAHyundai%E6%8B%BF%E4%B8%8B%E7%8D%8E%E5%BA%A7
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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