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://epc-co.com:443/epc/jp/GaN%E3%81%AE%E8%A9%B1/Post/14647/APEC-2018-%E3%83%91%E3%83%AF%E3%83%BC-%E3%82%A8%E3%83%AC%E3%82%AF%E3%83%88%E3%83%AD%E3%83%8B%E3%82%AF%E3%82%B9%E3%81%AE%E4%B8%96%E7%95%8C%E3%81%AB%E3%81%8A%E3%81%91%E3%82%8BGaN%E9%9D%A9%E5%91%BD
Physical Path   C:\inetpub\wwwroot\epc\jp\GaN%E3%81%AE%E8%A9%B1\Post\14647\APEC-2018-%E3%83%91%E3%83%AF%E3%83%BC-%E3%82%A8%E3%83%AC%E3%82%AF%E3%83%88%E3%83%AD%E3%83%8B%E3%82%AF%E3%82%B9%E3%81%AE%E4%B8%96%E7%95%8C%E3%81%AB%E3%81%8A%E3%81%91%E3%82%8BGaN%E9%9D%A9%E5%91%BD
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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