While having the wp-admin directory is helpful, on a production environment there is no need to have these files available by the web server. So I started to move the files out.
What happened first
When I moved the folder wp-admin out of the Wordpress folder the entire site went blank. Not a good start.
The ‘./wp-admin/includes’ folder
While looking around the wp-admin directory I noticed the ‘includes’ folder. So I made a folder structure of ‘./wp-admin/includes/’ and I moved all of the files that were in the includes directory back into the proper place. When I refreshed the site, it came back!
Now, what files do you need?
After moving the files out of the includes directory, I was able to find 4 key files that seemed to be required.