Auto Login

Registry Path

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon 

All of the following entries are STRINGS

Workgroup / Legacy Domain
AutoAdminLogon1
DefaultUserNameusername
DefaultPasswordpassword
DefaultDomaindomain (if on domain)
WINDOWS 10 Domain
AutoAdminLogon1
DefaultPasswordpassword
DefaultUserName<domain>\username
DefaultDomainName<domain>

*<domain> is the simple short and NOT the full qualified DNS name