Following large Windows 10 patch launcher fails

I work on Windows 10 and from my experience this is most stable Windows. I know different opinions, but I never had problems nor BSOD on W10. Also any problems with Epic Launcher. Editor crashes something but this is other problem and not system connected. I have all drivers updated but even when I had old GPU with no more supported drivers I had no problems with Launcher nor overall PC stability issues. I think problem can be with drivers errors, not good matched hardware or HD problems. Wide question.