This is a setting in ToolsOptions
You can change it with VBA

You can copy this two events in the ThisWorkbook module

Private Sub Workbook_Activate()
Application.CellDragAndDrop = False
End Sub

Private Sub Workbook_Deactivate()
Application.CellDragAndDrop = True
End Sub


--
Regards Ron de Bruin
http://www.rondebruin.nl


"CVincent" wrote in message ...
I would like to prevent users to drag and drop data.
Please note that I cannot protect the cells because I
want the user to be able to change the data, but drag and
drop mess up all my references.
Any idea?