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
ASPClassic
Error Code
0x00000000
Requested URL
https://www.ruh.nhs.uk:443/For_Clinicians/education/nuclear_meds/nm_training/octreotide/Octreotide%20Case%205.asp
Physical Path
\\hp3-winc2-smb1.hostingp3.local\domainsx\437\2554437\user\htdocs\For_Clinicians\education\nuclear_meds\nm_training\octreotide\Octreotide%20Case%205.asp
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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