"Sharing only" account not visible in "Users & Groups" since Mavericks Before upgrading to Mavericks, I had a "Sharing only" account called "Shared" with a password, which I used to allow other computers to connect to my Mac. However, since upgrading to Mavericks, this account no longer appears in the "Users &amp; Groups" System Preferences pane. I believe this is because it conflicted with the built-in "Shared" folder in /Users/Shared, so Mavericks probably had trouble with this account when upgrading OS X.

However, the account itself still works, with my old password. Is there a way to delete this account, even if it doesn't appear in "Users &amp; Groups", without deleting the /Users/Shared folder (which is separate; the folder is part of OS X, and my "Sharing only" account has no Home folder).
I have had this issue as well and I found a solution:
http://support.apple.com/kb/TS4404 on the Apple support website.

Just type the following two commands in terminal:

Quit and reopen System preferences and the sharing account will show up:

sudo dscl . create /Users/root GeneratedUID FFFFEEEE-DDDD-CCCC-BBBB-AAAA00000000

and then:

sudo dscl . create /Users/accountname UserShell /bin/bash

Replace "accountname" in the commands above with the missing account name.