I am going to be forced to upgrade my OS to High Sierra by the end of the year. But if I do, then key software will cease functioning and I can't even buy a replacement. (TurboTax 2018 won't run on El Capitan, but only an online version of QuickBooks exists for High Sierra).
Can I use Parallels to run El Capitan and its applications?
Can I use Parallels to run El Capitan and its applications?