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://life.u-car.com.tw:443/article/50375/ONE%20ART%20Taipei%202020%20%E8%97%9D%E8%A1%93%E8%87%BA%E5%8C%97%E7%89%B9%E5%B1%95%E6%8F%AD%E5%AF%86%20%E6%90%B6%E5%85%88%E4%B8%80%E8%A6%BD%E4%B8%81%E6%98%A5%E8%AA%A0Art%20and%20Only%E7%89%B9%E5%B1%95
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\50375\ONE%20ART%20Taipei%202020%20%E8%97%9D%E8%A1%93%E8%87%BA%E5%8C%97%E7%89%B9%E5%B1%95%E6%8F%AD%E5%AF%86%20%E6%90%B6%E5%85%88%E4%B8%80%E8%A6%BD%E4%B8%81%E6%98%A5%E8%AA%A0Art%20and%20Only%E7%89%B9%E5%B1%95
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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