After installation and when I go to launch, there is a window that pops up that is titled: "TurboTax Deluxe 2019 - Activation" however, the rest of the window is blank.

Same problem with the 2020 turbotax.  Blank activation window.

For assistance with troubleshooting a blank screen in TurboTax, please see Troubleshoot blank screens, missing buttons, or missing images.

I just wanted to mention that I was able to fix the issue by updating windows. (For last year 2019)