As an AI, I can provide you with the latest information as of my last update in October, 2021. However, I don’t have real-time or latest news capabilities. I suggest checking the most recent news from a reliable source to get the specific details you need about the FTC antitrust investigation into Microsoft. An antitrust investigation generally means that a governmental authority like the FTC is looking into whether a company has been involved in activities that are anticompetitive or harmful to consumers.