id summary reporter owner description type status component version resolution keywords cc guest host 590 NT 4.0 installation of guest additions fails fbusse "After successful (minimal) installation of german language Microsoft Windows NT 4.0 (tried both with SP 1 and SP 6.0a) I call the VB ""guest additions"" install. The additions install without error until the request for manual or automatic reboot. Instead of reboot, their installer comes up again. In a first try, I've followed the installer once more, seeming to install (again) with no error, in a second try, I've cancelled this second installer. In both cases, after installation of the ""guest additions"", booting fails with the message ""Starting at least one service failed, which should start with system startup. Please check the event protocol"" (translation of german message as in [http://busse.oche.de/tmp/20070826NTerror.jpg screenshot]). In this state, the VM seems not to recognize any keyboard stroke, no mouse is displayed. Even sending [Ctrl]-[Alt]-[Del] from the VB menu has no effect. The only way to escape seems a brute force power-down. On next startup of the VM, the same issue... Requests both [http://forums.virtualbox.org/viewtopic.php?t=1382&start=0&postdays=0&postorder=asc&highlight= in the forum] and [http://vbox.innotek.de/pipermail/vbox-users/2007-August/002011.html in the mailing-list] did not bring up any solution." defect closed other VirtualBox 1.4.0 fixed nt4 additions other other