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://theatroedu.gr:443/en/%CE%91%CF%81%CF%87%CE%B5%CE%AF%CE%BF/ctl/RSS/mid/459/CategoryID/356/CategoryName/2019-%CE%A0%CE%AE%CE%BB%CE%B9%CE%BF-%CE%A3%CF%85%CE%BC%CF%80%CE%BB%CE%B7%CF%81%CF%89%CE%BC%CE%B1%CF%84%CE%B9%CE%BA%CE%AC-%CE%95%CF%81%CE%B3%CE%B1%CF%83%CF%84%CE%AE%CF%81%CE%B9%CE%B1
Physical Path   h:\root\home\theatroedu-001\www\theatroedu\en\%CE%91%CF%81%CF%87%CE%B5%CE%AF%CE%BF\ctl\RSS\mid\459\CategoryID\356\CategoryName\2019-%CE%A0%CE%AE%CE%BB%CE%B9%CE%BF-%CE%A3%CF%85%CE%BC%CF%80%CE%BB%CE%B7%CF%81%CF%89%CE%BC%CE%B1%CF%84%CE%B9%CE%BA%CE%AC-%CE%95%CF%81%CE%B3%CE%B1%CF%83%CF%84%CE%AE%CF%81%CE%B9%CE%B1
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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