July 25, 20214 yr Folks, I upgraded my AVG Antivirus which also included AVG TuneUp (and some other modules new to me). Since I always like to keep my PC tuned, I tried AVG TuneUp - BIG MISTAKE!! Tried running MSFS 2020 after that and got the Black screen and blue progress line at the bottom which only got to 80% (after some while) and then stopped. Tried an number of things (eg clearing Community etc etc) but no luck. Looked like it was going to have to be a complete reinstall of 2020, but luckily I had a backup from a few days prior so restored and all now good. Avoid using AVG TuneUp - it'll mess up your MSFS 2020 installation.
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