Yesterday evening, Microsoft released the official update for Flight Simulator. The game launcher displays the availability of the patch, sized 333.2 Mb.
Not surprisingly, it was hard to connect to Microsoft servers and download the update in the first hours. Anyway, you can try to update directly over your current MSFS install. But in case of issues at launch after the update, it’s recommended to uninstall all files and proceed with a clean and full install. Here’s another link, for the Known Issues updated list.
Patch Version 1.7.14.0 is available in 20 minutes (10am PDT)! For those with installation issues, please check out this post for best practices on how to install the latest update.https://t.co/IvpyUSUcXU#MicrosoftFlightSimulator
— Microsoft Flight Simulator (@MSFSofficial) September 2, 2020
Yes my PC is showing a 12-15 GB download for MSFS 2020 PATCH NOTES. Because of my slowish internet this will take nearly all night. When I first downloaded the new sim, it took about 23 hours!