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://tongcucthuysan.gov.vn:443/vi-vn/nu%C3%B4i-tr%E1%BB%93ng-th%E1%BB%A7y-s%E1%BA%A3n/-qu%E1%BA%A3n-l%C3%BD-v%E1%BA%ADt-t%C6%B0-%C4%91%E1%BA%A7u-v%C3%A0o/doc-tin/014110/2019-12-23/Banner006
Physical Path   C:\www\vi-vn\nu%C3%B4i-tr%E1%BB%93ng-th%E1%BB%A7y-s%E1%BA%A3n\-qu%E1%BA%A3n-l%C3%BD-v%E1%BA%ADt-t%C6%B0-%C4%91%E1%BA%A7u-v%C3%A0o\doc-tin\014110\2019-12-23\Banner006
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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