Unrecognized configuration section system.applicationHost

Question

I was planning to add MinFileBytesPerSec attribute with in system.applicationHost configuration to overcome DOS vulnerability. However as soon as I add system.applicationHost within Configuration section of web.config, and run the application, it throws me an error stating:

Unrecognized configuration section system.applicationHost

I verified and I could find system.applicationHost defined in ApplicationHost.config file, and since I am using IIS 7.5, system.applicationHost should be available with default installation.

I am stuck with this issue of why system.applicationHost is not being recognized, any suggestion will be very helpful.

Answer 1

It is not allowed for a web.config file to define anything about <system.applicationHost>. Such changes must go to applicationHost.config.