Versuch mal:

Option Explicit

Sub ImportSemicolonDelimitedCSV()
    Dim fd As Office.FileDialog
    Set fd = Application.FileDialog(msoFileDialogFilePicker)
    
    Dim LineFromFile       As Variant
    Dim LineItems          As Variant
    
    With fd
            .Filters.Clear
            .Title = "Select a CSV File"
            .Filters.Add "CSV", "*.csv", 1
            .AllowMultiSelect = False
             
        Dim sFile As String
        If .Show = True Then
            sFile = .SelectedItems(1)
        End If
         
        End With
        ' Import CSV from FileDialog
        If sFile <> "" Then
            Open sFile For Input As #1
                
                Do Until EOF(1)
                    Line Input #1, LineFromFile
                    LineItems = Split(LineFromFile, ";")
                    Cells(Rows.Count, 1).End(xlUp).Offset(1).Resize(, UBound(LineItems)).Value = LineItems
                Loop
                
            Close #1
        End If
 
End Sub