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://www.bostonscientific.cn:80/news-center/pressrelease/2016/%E6%B3%A2%E5%A3%AB%E9%A1%BF%E7%A7%91%E5%AD%A6-%E5%A6%99%E6%89%8B%E5%8C%BB%E5%BF%83-%E5%BE%AE%E6%95%85%E4%BA%8B%E5%BE%81%E9%9B%86%E6%B4%BB%E5%8A%A8%E5%AE%8C%E7%BE%8E%E6%94%B6%E5%AE%98/
Physical Path   D:\IISSite\BSCI2002\news-center\pressrelease\2016\%E6%B3%A2%E5%A3%AB%E9%A1%BF%E7%A7%91%E5%AD%A6-%E5%A6%99%E6%89%8B%E5%8C%BB%E5%BF%83-%E5%BE%AE%E6%95%85%E4%BA%8B%E5%BE%81%E9%9B%86%E6%B4%BB%E5%8A%A8%E5%AE%8C%E7%BE%8E%E6%94%B6%E5%AE%98\
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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