In Windows 10 you can no longer change the last logged on user in the registry like you could in Windows 7. Windows 10 requires the user's SID to be entered as well. Here's an updated guide.
In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI
, you'll want to change 4 entries:
LastLoggedOnDisplayName
- Enter the user's full name, like
Allan Jude
- Enter the user's full name, like
LastLoggedOnSAMUser
- Enter the username, like
SHORTDOMAIN\allan.jude
- Enter the username, like
LastLoggedOnUser
- Enter the username again, like
SHORTDOMAIN\allan.jude