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/63141/%5B%E8%B3%BD%E9%81%93%E6%B8%AC%E8%A9%A6%5D%E7%84%A1%E5%A3%93%E5%8A%9B%E7%9A%84%E7%8E%A9%E6%A8%82%E8%BB%8A%E2%94%80Audi%20A1%20Sportback?utm_source=roadtest&utm_medium=list&utm_name=page_2&utm_content=title
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\63141\%5B%E8%B3%BD%E9%81%93%E6%B8%AC%E8%A9%A6%5D%E7%84%A1%E5%A3%93%E5%8A%9B%E7%9A%84%E7%8E%A9%E6%A8%82%E8%BB%8A%E2%94%80Audi%20A1%20Sportback
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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