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%95%CE%BA%CE%B4%CF%8C%CF%83%CE%B5%CE%B9%CF%82-%CE%92%CE%B9%CE%B2%CE%BB%CE%AF%CE%B1/tabid/3638/ctl/Login/language/el-GR/Default.aspx?returnurl=%252Fel-gr%252F%25CE%25B5%25CE%25BA%25CE%25B4%25CF%258C%25CF%2583%25CE%25B5%25CE%25B9%25CF%2582-%25CE%25B2%25CE%25B9%25CE%25B2%25CE%25BB%25CE%25AF%25CE%25B1.aspx
Physical Path   h:\root\home\theatroedu-001\www\theatroedu\%CE%95%CE%BA%CE%B4%CF%8C%CF%83%CE%B5%CE%B9%CF%82-%CE%92%CE%B9%CE%B2%CE%BB%CE%AF%CE%B1\tabid\3638\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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