I have a fresh install of qb 2019 and it does not see the internet. had to activate through the phone in method. two system same issue. third install worked all done at the same time fresh copy of windows 10 pro. only odd thing is the two that can not see the internet are virtual machines. otherwise they work fine and the internet does indeed work on both machines. only av is the microsoft built in one.
Virtual Servers are still new to the QuickBooks environment. Right now, it's not supported, but we see no reason that they should not work. To help you with the network setup, I recommend consulting with your IT professional.
You can read more information about supported network types and system requirements in the following articles: