Windows 11 was launched in October 2021 and is now a significant operating system on hundreds of millions of PCs worldwide. It features a redesigned Start menu, taskbar, and Settings app, along with a Widgets pane, tabbed File Explorer, and AI-powered Windows Copilot. The operating system requires hardware-assisted security features, including Secure Boot and device encryption, and mandates specific hardware compatibility, such as a 1GHz processor, 4GB RAM, and TPM version 2.0. Support for Windows 10 will end on October 14, 2025, after which it will not receive updates unless users subscribe to Extended Security Updates. Windows 11 is available as a free upgrade for licensed Windows 10 users, and the installation process includes various options for upgrading. Microsoft reports higher customer satisfaction with Windows 11 compared to previous versions.