Script use: Create a user with a password, add user to group “Administrator“, with no expiring password
Change variable entries and run script as admin in PowerShell:
$password = ConvertTo-SecureString "password-here" –AsPlainText –Force
$username = "username-here"
$fullname = "fullname-here"
$description = "description here"
New-LocalUser -Name $username -Password $password -FullName $fullname -Description $description
Add-LocalGroupMember -Group "Administrators" -Member $username
Set-LocalUser -Name $username -PasswordNeverExpires 1