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   http://bostonscientific.cn:80/news-center/pressrelease/2017/%E6%B3%A2%E5%A3%AB%E9%A1%BF%E7%A7%91%E5%AD%A6%E6%88%90%E5%8A%9F%E5%AE%8C%E6%88%90ams-700tm%E4%BA%BA%E5%B7%A5%E6%B5%B7%E7%BB%B5%E4%BD%93%E4%B8%AD%E5%9B%BD%E9%A6%96%E4%BE%8B%E6%A4%8D%E5%85%A5%E6%9C%AF/
Physical Path   D:\IISSite\BSCI2002\news-center\pressrelease\2017\%E6%B3%A2%E5%A3%AB%E9%A1%BF%E7%A7%91%E5%AD%A6%E6%88%90%E5%8A%9F%E5%AE%8C%E6%88%90ams-700tm%E4%BA%BA%E5%B7%A5%E6%B5%B7%E7%BB%B5%E4%BD%93%E4%B8%AD%E5%9B%BD%E9%A6%96%E4%BE%8B%E6%A4%8D%E5%85%A5%E6%9C%AF\
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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