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.theatroedu.gr:80/%CE%98%CE%B5%CE%B1%CF%84%CF%81%CE%B9%CE%BA%CE%AD%CF%82%CE%9A%CE%B1%CF%84%CE%B1%CF%83%CE%BA%CE%B7%CE%BD%CF%8E%CF%83%CE%B5%CE%B9%CF%82/2016%CE%9A%CE%B1%CF%84%CE%B1%CF%83%CE%BA%CE%AE%CE%BD%CF%89%CF%83%CE%B7%CE%A0%CE%AE%CE%BB%CE%B9%CE%BF/%CE%A0%CF%89%CF%82%CE%B8%CE%B1%CF%86%CF%84%CE%AC%CF%83%CE%BF%CF%85%CE%BC%CE%B5/tabid/7722/ctl/Login/language/el-GR/Default.aspx?returnurl=%252Fel-gr%252F%25CE%25B8%25CE%25B5%25CE%25B1%25CF%2584%25CF%2581%25CE%25B9%25CE%25BA%25CE%25AD%25CF%2582%25CE%25BA%25CE%25B1%25CF%2584%25CE%25B1%25CF%2583%25CE%25BA%25CE%25B7%25CE%25BD%25CF%258E%25CF%2583%25CE%25B5%25CE%25B9%25CF%2582%252F2016%25CE%25BA%25CE%25B1%25CF%2584%25CE%25B1%25CF%2583%25CE%25BA%25CE%25AE%25CE%25BD%25CF%2589%25CF%2583%25CE%25B7%25CF%2580%25CE%25AE%25CE%25BB%25CE%25B9%25CE%25BF%252F%25CF%2580%25CF%2589%25CF%2582%25CE%25B8%25CE%25B1%25CF%2586%25CF%2584%25CE%25AC%25CF%2583%25CE%25BF%25CF%2585%25CE%25BC%25CE%25B5.aspx
Physical Path   h:\root\home\theatroedu-001\www\theatroedu\%CE%98%CE%B5%CE%B1%CF%84%CF%81%CE%B9%CE%BA%CE%AD%CF%82%CE%9A%CE%B1%CF%84%CE%B1%CF%83%CE%BA%CE%B7%CE%BD%CF%8E%CF%83%CE%B5%CE%B9%CF%82\2016%CE%9A%CE%B1%CF%84%CE%B1%CF%83%CE%BA%CE%AE%CE%BD%CF%89%CF%83%CE%B7%CE%A0%CE%AE%CE%BB%CE%B9%CE%BF\%CE%A0%CF%89%CF%82%CE%B8%CE%B1%CF%86%CF%84%CE%AC%CF%83%CE%BF%CF%85%CE%BC%CE%B5\tabid\7722\ctl\Login\language\el-GR\Default.aspx
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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