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   AutowiredPageHandlerFactory
Error Code   0x00000000
Requested URL   http://amshq.org:80/About%20AMS/What%20We%20Are%20Doing/Awards%20and%20Grants/Teacher%20Education%20Scholarships.aspx/~/media/508B2DA2FACC48E38180B140384D260F.ashx
Physical Path   C:\inetpub\wwwroot\ams.cd.prod\About%20AMS\What%20We%20Are%20Doing\Awards%20and%20Grants\Teacher%20Education%20Scholarships.aspx\~\media\508B2DA2FACC48E38180B140384D260F.ashx
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.

View more information »