On my Dell XPS 15 9560 I get the VT-X not activated Error during the installation, but everything is activated under BIOS… Someone else having issues with a Dell XPS series ? Newest BIOS Update…
It might be due to Hyper-V being enabled and conflicting with VirtualBox.
If you’re not using Hyper-V, you can go ahead and disable it. See https://www.poweronplatforms.com/enable-disable-hyper-v-windows-10-8/ for more details.
Once you’ve done that, restart your computer and then re-open Local.
Thanks for your replay ! Unfortunately I already tried that and it wasn’t successful…
Maybe someone who reads the forum has the same model and can tell me if he was successful ?
It looks like this may be a common issue with the Dell XPS 9500 series. See https://www.reddit.com/r/Dell/comments/4eac0h/psa_how_i_got_vtx_working_on_my_dell_xps_9550/