Ok, I finally found a solution. I uninstalled 4.9.2 and found folder “C:\Program Files\Epic Games\4.9”. I removed it and installed engine again – now generating of VS files works good.
Before removing I made a copy of this folder with wrong config files. If I merge this wrong folder with new engine folder – this issue appears again. You can check it to find cause of failure.
Archived folder (8 mb): MEGA