I was very very frustrated. I kept getting a d3d11 crashes, and it got worse and worse. It got to the point that I’d have to reboot the computer multiple times just to get msfs up. I started backing everything up to do a complete reinstall of windows and msfs. But then it started crashing without even attempting to load msfs - so I couldn’t even back it up. I brought another monitor from my work desk, just to see if it made any difference, and suddenly, there were no crashes. So, for those of you with d3d11.dll errors, consider trying a different monitor.
The monitor I was using clearly had some issue, so now it’s off to find a driver reinstall for that monitor, or get a new monitor.
Hope this helps some.