Microsoft is being investigated by the Federal Trade Commission in a wide-ranging antitrust probe, making it the fifth Big Tech company to fall under such scrutiny in several years. The demand for information that spans hundreds of pages and culminates over a year of informal discussions with Microsoft competitors and partners.

The FTC has launched an antitrust investigation into Microsoft, according to multiple reports — corroborating earlier reporting by the Financial Times.

Microsoft ( MSFT, Financials) is under investigation by the Federal Trade Commission for alleged anti-competitive practices, but Wedbush Securities views the inquiry as having limited impact with a potential change in leadership at the agency. Following the approaching change to a Trump presidency, FTC Chairwoman Lina Khan is set to resign.