Maybe it's better to delete my posts to prevent confusing other members.I'm guessing you're right about the locale
I have tried to do that but it doesn´t work. I attach my DB here. Maybe I did something wrong
It´s perfect thank youHeres an example. I only did up to letter f but it should give you the idea.
Note that I changed your table name and listbox name. I wouldnt use special characters in names and wouldn't name a listbox the same as a field.
Private Sub tabOne_Change()
Me.Namn.RowSource = "SELECT ID, Namn FROM [Tbl-Kund] WHERE Namn LIKE '" & Chr(65 + Me.tabOne.Value) & "*';"
End Sub