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.osservatoriofamiglia.it:443/contenuti/17506077/%22http:/www.ilpost.it/2016/01/06/lopinione-di-angelino-alfano-sulla-maternita-surrogata/%22http:/www.repubblica.it/politica/2016/01/14/news/stop_sulle_unioni_civili_da_trenta_cattolici_dem_adozioni_via_dal_testo_-131214739/?ref=HREC1-2%2522
Physical Path   D:\home\h545720.winp066.arubabusiness.it\osservatoriofamiglia.it\contenuti\17506077\%22http:\www.ilpost.it\2016\01\06\lopinione-di-angelino-alfano-sulla-maternita-surrogata\%22http:\www.repubblica.it\politica\2016\01\14\news\stop_sulle_unioni_civili_da_trenta_cattolici_dem_adozioni_via_dal_testo_-131214739\
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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