Userform not running when document is opening

[angel2903]

Hi all,

i have the following code:

Private Sub userform1_Open()
    Range("Ag4").Select
    OPENMESS.Show
End Sub

when I test it in the macro window it works but this does not work when the document opens. This ducoment comes from a sharepoint server and a user needs to enable the document before editing. Is this enabling the cause of the userform (OPENMESS) not running when document is open