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://roadtest.u-car.com.tw:443/article/2873/%E7%B2%89%E9%A0%98%E7%99%BD%E9%A0%98%E9%83%BD%E6%84%9B%E7%9A%84%E5%A4%A7%E7%8E%A9%E5%85%B7%20-%20Citroen%20C2%2012E6%20VTR%E8%A9%A6%E9%A7%95?utm_source=roadtest&utm_medium=list&utm_name=page_119&utm_content=image
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\2873\%E7%B2%89%E9%A0%98%E7%99%BD%E9%A0%98%E9%83%BD%E6%84%9B%E7%9A%84%E5%A4%A7%E7%8E%A9%E5%85%B7%20-%20Citroen%20C2%2012E6%20VTR%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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