IIS 7.5 detailed error-404.11

Error summary

HTTP 错误 404.11 – Not Found

The request filtering module is configured to reject requests that contain double escape sequences.

Detailed error information
Module RequestFilteringModule
Notice BeginRequest
Processing program StaticFile
error code 0x00000000
Requested URL http://unotes.net:80/fkk37a/plus/erraddsave.php?aid=6530&title=%D6%D0%87%F8%C3%A4%C8%CB%C2%C9%8E%9F%97%EE%D3%C0%BD%AD
Physical path D:webroot20201113unotes.netfkk37apluserraddsave.php?aid=6530&title=%D6%D0%87%F8%C3%A4%C8%CB%C2%C9%8E%9F%97%EE%D3%C0%BD%AD
Login method not sure yet
Login user not sure yet
The most likely cause:
  • The request contains double escape sequences, and the request filtering configured on the Web server rejects double escape sequences.
Things you can try:
  • Confirm the configuration/system.webServer/security/requestFiltering@allowDoubleEscaping setting in the applicationhost.config or web.confg file.
Links and more information

This is a safety feature. Please do not change this feature unless you are fully aware of the scope of the change. Before changing this value, a network trace should be performed to confirm that the request is not malicious. If the server allows double escape sequences, please modify the configuration/system.webServer/security/requestFiltering@allowDoubleEscaping setting. This may be caused by a malformed URL sent to the server by a malicious user.

More information”

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