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   StaticFile
Error Code   0x00000000
Requested URL   http://www.travelplus.com.tw:80/blog/2020/06/%E6%A8%82%E9%81%8A%E5%AE%B6%EF%BC%8C%E8%AE%93%E6%82%A8%E6%8F%90%E6%97%A9%E4%BD%BF%E7%94%A8-%E6%8C%AF%E8%88%88%E5%88%B8%EF%BC%81.html
Physical Path   D:\travelplus\blog\2020\06\%E6%A8%82%E9%81%8A%E5%AE%B6%EF%BC%8C%E8%AE%93%E6%82%A8%E6%8F%90%E6%97%A9%E4%BD%BF%E7%94%A8-%E6%8C%AF%E8%88%88%E5%88%B8%EF%BC%81.html
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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