The move by Khan, who has less than two months remaining in office before the Trump administration takes over, is one last attempt to rein in Big Tech.

The FTC has demanded information about several facets of Microsoft’s business, sending the tech giant an information request that is hundreds of pages long, according to Bloomberg.

The probe was approved by FTC Chair Lina Khan ahead of her likely departure in January. The election of Donald Trump as U.S. president and the expectation he will appoint a fellow Republican with a softer approach toward business, leaves the outcome of the investigation up in the air.