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   PageHandlerFactory-Integrated-4.0
Error Code   0x00000000
Requested URL   http://hmu.ac.ir:80/%DA%AF%D8%B1%D9%88%D9%87%20%DA%A9%D8%A7%D8%B1%D8%A2%D9%81%D8%B1%DB%8C%D9%86%DB%8C%20%D9%88%20%D8%A7%D8%B1%D8%AA%D8%A8%D8%A7%D8%B7%20%D8%A8%D8%A7%20%D8%B5%D9%86%D8%B9%D8%AA/Default.aspx?pid=24
Physical Path   D:\HostingSpaces\hmu.ac.ir\httpdocs\%DA%AF%D8%B1%D9%88%D9%87%20%DA%A9%D8%A7%D8%B1%D8%A2%D9%81%D8%B1%DB%8C%D9%86%DB%8C%20%D9%88%20%D8%A7%D8%B1%D8%AA%D8%A8%D8%A7%D8%B7%20%D8%A8%D8%A7%20%D8%B5%D9%86%D8%B9%D8%AA\Default.aspx
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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