Microsoft.XNA is initialized every other time in Visual Studio 2019

I have a game project on MonoGame. Usings:

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;

Sometimes the studio sees Xna, sometimes it doesn't. If it doesn't, I reboot it and everything works. Once again I reboot - again bugs. XNA hence. What to do?

Author: GREAT DNG, 2020-12-13