I want to open a file as read only and get some data from. However when I use
the follwoing code and someone already has the file open, it is as if I
never specified read only in the VBA Code.

If Dir(MyPath & LE_Actuals & "\" & Arr(i)) < "" Then
Workbooks.Open (MyPath & LE_Actuals & Arr(i)), 0, ReadOnly = True
ActiveWorkbook.Windows(1).Visible = False