Private Function DecodeBase64(ByVal strData As String) As Byte()

    Dim objXML As Object 'MSXML2.DOMDocument
    Dim objNode As Object 'MSXML2.IXMLDOMElement

    'get dom document
    Set objXML = CreateObject("MSXML2.DOMDocument")

    'create node with type of base 64 and decode
    Set objNode = objXML.createElement("b64")
    objNode.DataType = "bin.base64"
    objNode.Text = strData
    DecodeBase64 = objNode.nodeTypedValue

    'clean up
    Set objNode = Nothing
    Set objXML = Nothing

End Function