I have the same problem. Since the start msfs2024 has crashed on loading. I have a high end pc with 4090 graphics card and fast internet. I’ve done every stress test possible with no errors. My son’s pc (lesser spec on the same connection) works perfectly. In desperation, I hooked up my old 2080 super pc (same connection) and guess what…it ran perfectly! Whatever the problem with this programme, it’s so niche and random that it’s almost impossible to track down!