On October 10, 2025, Microsoft was in focus as both Office 2016 and Office 2019 reached end-of-life, marking a significant transition for enterprise and consumer customers who must now migrate to newer Office versions or Microsoft 365[1]. Additionally, Microsoft internally announced plans to overhaul GitHub to counter rising competition from AI coding tools like Cursor and Anthropic's Claude Code, aiming to make GitHub the central platform for AI-powered software development[3]. These developments are notable for their long-term business impact, though no single event triggered a sharp price move; MSFT closed at $510.96, down 2.19% for the day, with after-hours trading at $508.15 (-0.55%).