Hi Jos,

if the messagebox is active the app will normaly not close. The messagebox is modal.

Agnes
>Hi
>
>What causes the main application close button to sometimes not be available, not function? If I open a form the main application close button sometimes stops working. What are the conditions that cause this and is there a way to always have the main application close button function?
>
>It seems to be related to when I pop up a messagebox because immediately upon a message box being called by the form the close button on the main application deactivates.