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://www.acisport.it:443/it/STORICHE/notizie/2023/116294/scuderia-etruria-sport-accende-la-sfida-del-tricolore-rally-auto-storiche:-il-3-e-4-marzo-al-via-il-13.-historic-rally-delle-vallate-aretine/13%C2%B0%20Historic%20Rally%20Vallate%20Aretine
Physical Path   D:\home\h477920.winp998.arubabusiness.it\acisport.it\it\STORICHE\notizie\2023\116294\scuderia-etruria-sport-accende-la-sfida-del-tricolore-rally-auto-storiche:-il-3-e-4-marzo-al-via-il-13.-historic-rally-delle-vallate-aretine\13%C2%B0%20Historic%20Rally%20Vallate%20Aretine
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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