Can't debug web app

Question

I'm getting this message when I try and attach to process. How do I fix this?:

Answer 1

Are you sure you're in debug mode?

Also in your web.config:

<configuration>
  <compilation debug="true"/>
</configuration>

If you are, and it's another assembly you're hitting, try this link as well.

Answer 2

Have you tried "changing its project build configuration to 'Debug' mode"?

The DLL file that you're trying to attach to ("Chatham.Web.DLL") was either built with compiler optimizations enabled or without debug information included. You need to recompile that DLL with optimizations disabled and debug information included. It might also help to "clean" the solution first before you rebuild it.