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/T%E1%BB%95ng-c%E1%BB%A5c-Th%E1%BB%A7y-s%E1%BA%A3n/ctl/SendPassword?returnurl=%252Fvi-vn%252FH%25E1%25BB%2587-th%25E1%25BB%2591ng-v%25C4%2583n-b%25E1%25BA%25A3n%252F-Th%25E1%25BB%25A7-t%25C6%25B0%25E1%25BB%259Bng-ch%25C3%25ADnh-ph%25E1%25BB%25A7%252FQuy%25E1%25BA%25BFt-%25C4%2591%25E1%25BB%258Bnh
Physical Path   C:\www\vi-vn\T%E1%BB%95ng-c%E1%BB%A5c-Th%E1%BB%A7y-s%E1%BA%A3n\ctl\SendPassword
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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