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/41420/%E8%B1%AA%E8%8F%AF%E8%88%87%E5%83%B9%E5%80%BC%E7%9A%84%E6%BA%90%E9%A0%AD%E2%94%80Jagaur%20Land%20Rover%E8%8B%B1%E5%9C%8B%E5%8F%83%E8%A8%AA%E8%A8%98%E5%AF%A6%EF%BC%8C%E6%AD%B7%E5%8F%B2%E5%82%B3%E6%89%BF%E7%AF%87
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\41420\%E8%B1%AA%E8%8F%AF%E8%88%87%E5%83%B9%E5%80%BC%E7%9A%84%E6%BA%90%E9%A0%AD%E2%94%80Jagaur%20Land%20Rover%E8%8B%B1%E5%9C%8B%E5%8F%83%E8%A8%AA%E8%A8%98%E5%AF%A6%EF%BC%8C%E6%AD%B7%E5%8F%B2%E5%82%B3%E6%89%BF%E7%AF%87
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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