In that case, try...

    sFullName = Application.GetOpenFilename( _
        FileFilter:="Excel Files (*.xlsx;*.xlsm;*.xlsb;*.xls), *.xlsx;*.xlsm;*.xlsb;*.xls", _
        Title:="Select a File", _
        ButtonText:="Select")
        
    If sFullName = "False" Then Exit Sub
Hope this helps!