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://feature.u-car.com.tw:80/article/39052/%E5%B0%8B%E6%89%BE%E4%B8%8B%E4%B8%80%E4%BB%BB%E6%9C%80%E4%BD%B3%E8%B7%A8%E7%95%8C%E5%B0%8F%E5%9E%8B%E4%BC%91%E6%97%85%E2%94%80Audi%20Q2%E6%BD%9B%E5%8A%9B%E7%84%A1%E7%AA%AE
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\39052\%E5%B0%8B%E6%89%BE%E4%B8%8B%E4%B8%80%E4%BB%BB%E6%9C%80%E4%BD%B3%E8%B7%A8%E7%95%8C%E5%B0%8F%E5%9E%8B%E4%BC%91%E6%97%85%E2%94%80Audi%20Q2%E6%BD%9B%E5%8A%9B%E7%84%A1%E7%AA%AE
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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