auto close msgbox

the message box was made with a form and is displayed instinly when you open the file and it states the General Information about this file for those who refference it's data. like my selef.

This is the code that displays the message, but I can't change any thing in that file.
and This code is located in the folder “Microsoft excel object” and named “ThisWorkbook”

Private Sub Workbook_Open()
    'this activates the General Instructions Form when the workbook is opened
    
    ActiveWindow.ScrollWorkbookTabs Position:=xlFirst
        Sheets("Master List").Select
        frmGeneralInformation.Show
End Sub