Yeah, that's a solid plan. Just double-check that your backup includes the folders for those specific apps and games you're worried about. Let me know if that works.
Same here. You could also try running the Windows Update Troubleshooter first, as that specific error is often related to a driver conflict. Good luck!
+1 Yeah, that troubleshooter is a good call, but to ease your mind about the backup, File History is solid for personal files, but it won't grab everything like some app data—did you also create a system restore point before starting?