On October 14, 2025, Microsoft officially ends support for Windows 10, marking a significant transition for millions of users and enterprises as the operating system will no longer receive security updates, technical support, or feature enhancements. This end-of-support event is a major milestone for the company, prompting recommendations to upgrade to Windows 11 or enroll in extended security programs. The last available MSFT stock price was $513.54 (-0.10%), with no evidence of a significant price move or company-specific news directly tied to this transition, suggesting the event was anticipated and largely priced in by the market.