Find User SID

Sometimes you need to find out a user's SID...

c:\> wmic useraccount get name,sid

Or you could do it the Microsoft Way, but that's more difficult for some reason.

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList

Under the ProfileList key, you will see the SIDs. By selecting each one individually, you can look at the value entry and see what user name is associated with that particular SID.