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/44967/%E6%97%97%E4%B8%8B%E5%A4%9A%E7%A8%AE%E8%BB%8A%E6%AC%BE%E6%9C%80%E4%BD%8E%E6%9C%88%E4%BB%989,900%E5%85%83%EF%BC%8CAudi%202019%E5%B9%B41%E6%9C%88%E4%BF%83%E9%8A%B7%E6%96%B9%E6%A1%88?utm_source=promotion&utm_medium=list&utm_name=page_1&utm_content=image
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\44967\%E6%97%97%E4%B8%8B%E5%A4%9A%E7%A8%AE%E8%BB%8A%E6%AC%BE%E6%9C%80%E4%BD%8E%E6%9C%88%E4%BB%989,900%E5%85%83%EF%BC%8CAudi%202019%E5%B9%B41%E6%9C%88%E4%BF%83%E9%8A%B7%E6%96%B9%E6%A1%88
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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