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://promotion.u-car.com.tw:80/article/39236/%E6%9C%AC%E6%9C%88%E5%85%A5%E4%B8%BBLuxgen%E4%BA%AB%E9%AB%98%E9%A1%8D%E9%9B%B6%E5%88%A9%E7%8E%87%EF%BC%8C%E5%85%8D%E8%B2%BB%E5%8D%87%E7%B4%9A%E6%99%BA%E8%83%BD%E5%B0%8E%E8%88%AA%E7%B3%BB%E7%B5%B1
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\39236\%E6%9C%AC%E6%9C%88%E5%85%A5%E4%B8%BBLuxgen%E4%BA%AB%E9%AB%98%E9%A1%8D%E9%9B%B6%E5%88%A9%E7%8E%87%EF%BC%8C%E5%85%8D%E8%B2%BB%E5%8D%87%E7%B4%9A%E6%99%BA%E8%83%BD%E5%B0%8E%E8%88%AA%E7%B3%BB%E7%B5%B1
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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