Here's what I discovered. The Digital Signature was not labeled completely.
I opened file explorer; open the drive with windows on it; open the X-Box folder; open the Microsoft Flight Simulator Digital Ownership folder; open the Content folder; right click on the gamelaunchhelper file and left click properties; if the title block doesn't have ".exe", add it so it reads "gamelauncherhelper.exe".
Just click out of everything and launch Flight Simulator 2020. It started right up and began the main download.