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   ExtensionlessUrlHandler-Integrated-4.0
Error Code   0x00000000
Requested URL   https://studownload.ir:443/search/key-%ef%ba%97%ef%ba%b8%ef%ba%a8%ef%af%bf%ef%ba%ba-%ef%ad%bc%ef%bb%ac%ef%ba%ae%d9%87-%ef%ba%91%ef%ba%ae-%d8%a7%ef%ba%b3%ef%ba%8e%d8%b3-%d9%88%ef%af%be%ef%ba%aa%ef%af%be%ef%bb%ae
Physical Path   C:\Inetpub\vhosts\studownload.ir\httpdocs\search\key-%ef%ba%97%ef%ba%b8%ef%ba%a8%ef%af%bf%ef%ba%ba-%ef%ad%bc%ef%bb%ac%ef%ba%ae%d9%87-%ef%ba%91%ef%ba%ae-%d8%a7%ef%ba%b3%ef%ba%8e%d8%b3-%d9%88%ef%af%be%ef%ba%aa%ef%af%be%ef%bb%ae
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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