WPF checkbox event is not firing when I install my program in some Windows environment

Until now, There are many times I installed this program. checkbox event firing well in all Window 10 environment. But, in recent environment, checkbox not firing. Recent Enviroment is also Window 10. why checkbox event not firing?

• xaml.cs

  private void checkBox1_Checked(object sender, RoutedEventArgs e)
  {
      //code..
  }
  
  

• xaml

  <CheckBox Content="test1" Foreground="White" Height="16" 
  HorizontalAlignment="Left" Margin="459,-29,0,0"
  Name="checkBox1" 
  VerticalAlignment="Top" 
  IsThreeState="True" 
  Checked="checkBox1_Checked" Unchecked ="checkBox1_Unchecked" 
  Indeterminate="checkBox1_Indeterminate"/>