@Mrylant89 The blocking of TCP port 443 is not a global block, just on the two Quickbooks .exe files outgoing.

Your explanation just confuses as we disagree with you. I have never logged in to Intuit from my company program. When the login requests began to come I canceled them, when I could not cancel any more I used alt-F4 to close the window, which gave a 7 day breather. A later software update wanted me to do this every time I opened my file. I still closed the window.

By tracking the firewall traffic I found the outgoing requests were all using 443. Set up your firewall to block outgoing requests on the two QB program files, TCP port 443 and you will not receive a login window (until Intuit change it again)

For now my data is secure on my PC, and the only complication seems to be (for me) emailing invoices from Gmail GSuite needing permission for "insecure" email access. 

I have been using Quickbooks for more than 20 years and do not want to give up on something I know how to use. This, however has been frustrating.