BTW, the /Online switch for DISM has nothing to do with networking. It specifies that you want to take action against the currently running OS instance, rather than a .wim file that's been mounted.
docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-global-options-for-command-line-syntax
Also, as Vista is now out of extended support and therefore not receiving any further security updates, it's not something you'd want on a network anyway!
Last edited by CaptOveur; 6th November 2017 at 16:27.
Reason: added EOL note