last supported virtualbox guest additions for certain windows versions Older Windows Versions unknown Windows 2000 and XP version series latest supported guest additions 6.1.x 6.1.42 and older 7.0.x 7.0.6 and older Windows 7 and 8.1 version series latest supported guest additions 6.1.x 6.1.50 and older 7.0.x 7.0.16 and older no guarantee of completeness