Out of memory при создании документа Word

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Word = Microsoft.Office.Interop.Word;
 
namespace test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            Word.Application word = null;
            try { word = new Word.Application(); }
            catch (Exception ex) { MessageBox.Show(ex.Message); }
            word.Visible = true;
        }
    }
}

Word.Application word = new Word.Application();
word.Visible = true;

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Word = Microsoft.Office.Interop.Word;
 
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
         private void btnStart_Click(object sender, EventArgs e)
        {
            Word.Application word = new Word.Application();
            word.Visible = true;
            Word.Document doc = word.Documents.Add();
            doc.Select();
            //word.Selection.TypeText("Hello, World!");
        }
    }
}

Word.Application word = new Word.Application();

using Microsoft.Office.Interop.Word;
 
    class WordImprovement
    {
        static void Main()
        {
            var app = new Application { Visible = false };
            app.Documents.Add();
            Document doc = app.ActiveDocument;
            Paragraph para = doc.Paragraphs.Add();
            para.Range.Text = "Test";
            doc.SaveAs(FileName: "test.doc",
                       FileFormat: WdSaveFormat.wdFormatDocument97);
            doc.Close();
            app.Application.Quit();
        }
    }
}

doc.SaveAs(FileName: Environment.CurrentDirectory+"\\test.doc",
                       FileFormat: WdSaveFormat.wdFormatDocument97);