What is w3wp.exe?

Question

I have a WCF service running under a service user on my local system. Every time I try to debug it is giving me a message Attach Security warning.<

Answer 1

w3wp.exe is a process associated with the application pool in IIS. If you have more than one application pool, you will have more than one instance of w3wp.exe running. This process usually allocates large amounts of resources. It is important for the stable and secure running of your computer and should not be terminated.

You can get more information on w3wp.exe here

http://www.processlibrary.com/en/directory/files/w3wp/25761/