Turn off picture password sign-in
Supported on: At least Windows Server 2012, Windows 8 or Windows RT
Registry
HKLM
Software\Policies\Microsoft\Windows\System Value name: BlockDomainPicturePassword
Enabled: BlockDomainPicturePassword = 1
Disabled: BlockDomainPicturePassword = 0
Description
This policy setting allows you to control whether a domain user can sign in using a picture password. If you enable this policy setting, a domain user can't set up or sign in with a picture password. If you disable or don't configure this policy setting, a domain user can set up and use a picture password. Note that the user's domain password will be cached in the system vault when using this feature.