How do I recover my lost subfolders after renaming hotmail to outlook?

After switching my hotmail name to outlook.com and making it my primary email I have lost all of my email subfolders! This seems to be quite a common problem as there are a number of similar threads online describing the same problem.  In particular, after switching names all of my inbox emails remain but all of my subfolders have disappeared.  This as you can imagine is very frustrating and unexpected so any help would greatly appreciated!  Therefore, can someone please walk me through the steps to fix this?  

Also, I tried renaming back to hotmail but nothing appeared.  

 Thanks in advance for your help.