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   PageHandlerFactory-Integrated-4.0
Error Code   0x00000000
Requested URL   http://www.seosoft.net:80/%E3%82%BD%E3%83%95%E3%83%88%E3%82%A6%E3%82%A7%E3%82%A2%E9%96%8B%E7%99%BAIT/%E3%83%96%E3%83%AD%E3%82%B0%E6%8A%80%E8%A1%93%E3%81%A8%E3%81%AE%E6%88%AF%E3%82%8Conseosoftnet%E6%9B%B4%E6%96%B0%E7%B5%82%E4%BA%86/tabid/62/EntryID/197/Default.aspx
Physical Path   E:\web\seosoftnet0\htdocs\%E3%82%BD%E3%83%95%E3%83%88%E3%82%A6%E3%82%A7%E3%82%A2%E9%96%8B%E7%99%BAIT\%E3%83%96%E3%83%AD%E3%82%B0%E6%8A%80%E8%A1%93%E3%81%A8%E3%81%AE%E6%88%AF%E3%82%8Conseosoftnet%E6%9B%B4%E6%96%B0%E7%B5%82%E4%BA%86\tabid\62\EntryID\197\Default.aspx
Logon Method   Not yet determined
Logon User   Not yet determined
Request Tracing Directory   C:\inetpub\logs\FailedReqLogFiles

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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