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   StaticFile
Error Code   0x00000000
Requested URL   http://www.comune.sogliano.fc.it:80/documents/836517/0/PREFERENZE+ATTRIBUITE+AI+SINGOLI+CANDIDATI+-+Elezioni+Consiglio+dei+Giovani+12.12.2018/e09d0d92-85d5-4cff-b523-4ce29268b0da;jsessionid=BC4A00D5F51BC3F5DA2CC195E89E9B26.lrfc-fe2?version=1.2&t=1544626633213
Physical Path   F:\web\comune.sogliano.fc.it\documents\836517\0\PREFERENZE+ATTRIBUITE+AI+SINGOLI+CANDIDATI+-+Elezioni+Consiglio+dei+Giovani+12.12.2018\e09d0d92-85d5-4cff-b523-4ce29268b0da;jsessionid=BC4A00D5F51BC3F5DA2CC195E89E9B26.lrfc-fe2
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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