Windows 8 build 8438

Windows 8 build 8438 is a build of Windows 8, which was uploaded to BetaArchive on 4 January 2019. It is the first build to remove the Desktop Gadgets (introduced in Windows Vista) due to security risks.

Windows Vista mention
This build's branch mentions Windows Vista's codename, Longhorn. It's unknown why Microsoft used it.

Applications
Many Windows applications will result in an "Unknown Publisher" warning when opening.