I have reinstalled it on a new 2TB and everything works fine now. I had a 1 TB available for MFS but realized that with upgrades of 40 GIG a few times a year, plus some extra sceneries bought here and there, plus some freewares, my HD would be filled within a few years. The computer store reprogrammed my computer so that everything bought through Microsoft Store goes into the new SSD 2TB. So far, everything is stable and I still cannot believe how fantastic the lighting is, and how realistic MFS2020 is. I would not fly anything else.