On Sat, Sep 30, 2017 at 09:16:59AM +0200, Hans wrote: Hi,
> maybe you need to add this entry in sources.list: > > deb http://download.virtualbox.org/virtualbox/debian stretch contrib Or you just use the packages from stretch-backports? Those should be the best fit for now. https://backports.debian.org/Instructions/ The original error message looked a bit like OP tried to use the packages from testing/unstable in stretch which actually worked for some time. Sven