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.hopkinsmedicine.org:443/gec/events/GEC/summary/byday/01/03/2013/L%2DBayview%20Campus%20%28JHAAC%2C%20Norman%20Library%29/T%2DConference/K%2Dcase/K%2Dclinical/K%2Dresearch/K%2Ddivision/K%2Dgeriatric/K%2Dhopkins/K%2Djohns
Physical Path   E:\WebRoot\hopkinsmedicine.org\gec\events\GEC\summary\byday\01\03\2013\L%2DBayview%20Campus%20%28JHAAC%2C%20Norman%20Library%29\T%2DConference\K%2Dcase\K%2Dclinical\K%2Dresearch\K%2Ddivision\K%2Dgeriatric\K%2Dhopkins\K%2Djohns
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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