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://promotion.u-car.com.tw:443/article/44203/%E5%85%A8%E8%BB%8A%E7%B3%BB%E4%BA%AB%E9%A6%96%E6%9C%9F%E5%85%8D%E4%BB%98%E3%80%814%E6%AC%A1%E4%BF%9D%E9%A4%8A%E7%A6%AE%E9%81%87%EF%BC%8CBMW%E6%8E%A8%E5%87%BA11%E6%9C%88%E4%BB%BD%E4%BF%83%E9%8A%B7/
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\44203\%E5%85%A8%E8%BB%8A%E7%B3%BB%E4%BA%AB%E9%A6%96%E6%9C%9F%E5%85%8D%E4%BB%98%E3%80%814%E6%AC%A1%E4%BF%9D%E9%A4%8A%E7%A6%AE%E9%81%87%EF%BC%8CBMW%E6%8E%A8%E5%87%BA11%E6%9C%88%E4%BB%BD%E4%BF%83%E9%8A%B7\
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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