OLEDBConnection.RetrieveInOfficeUILang (Excel)
True if the data and errors are to be retrieved in the Office user interface display language when available.
If this property is set to False, the LCID value in the connection string is used instead. If an LCID is not specified, the default LCID from the server is used.
ActiveWorkbook.Connections(1).OLEDBConnection.RetrieveInOfficeUILang = True