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%252Fth%25C3%25B4ng-tin-h%25E1%25BB%25AFu-%25C3%25ADch%252Fdanh-s%25C3%25A1ch-c%25C3%25A1c-lo%25C3%25A0i-h%25E1%25BA%25A3i-s%25E1%25BA%25A3n-t%25E1%25BA%25A7ng-%25C4%2591%25C3%25A1y-th%25C6%25B0%25E1%25BB%259Dng-g%25E1%25BA%25B7p-t%25E1%25BB%25AB-h%25C3%25A0-t%25C4%25A9nh-hu%25E1%25BA%25BF
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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