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   ExtensionlessUrl-Integrated-4.0
Error Code   0x00000000
Requested URL   https://stanford.com.vn:443/kien-thuc-lap-trinh/tin-chi-tiet/cagId/42/id/16179/H%E1%BB%8Dc%20sql%20c%C3%B9ng%20chuy%C3%AAn%20gia%20t%E1%BA%A1i%20Stanford,%20n%E1%BA%AFm%20v%E1%BB%AFng%20ki%E1%BA%BFn%20th%E1%BB%A9c%20c%C5%A9ng%20nh%C6%B0%20th%C3%A0nh%20th%E1%BA%A1o%20k%E1%BB%B9%20n%C4%83ng%20th%E1%BB%B1c%20h%C3%A0nh
Physical Path   C:\webspace\stanford.com.vn\httpdocs\kien-thuc-lap-trinh\tin-chi-tiet\cagId\42\id\16179\H%E1%BB%8Dc%20sql%20c%C3%B9ng%20chuy%C3%AAn%20gia%20t%E1%BA%A1i%20Stanford,%20n%E1%BA%AFm%20v%E1%BB%AFng%20ki%E1%BA%BFn%20th%E1%BB%A9c%20c%C5%A9ng%20nh%C6%B0%20th%C3%A0nh%20th%E1%BA%A1o%20k%E1%BB%B9%20n%C4%83ng%20th%E1%BB%B1c%20h%C3%A0nh
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.

View more information »