Windows 10 was released in July 2015 and is now at its end of life, with no further updates. Windows 11 was introduced in October 2021, offering enhanced security features and requiring specific hardware specifications such as TPM 2.0 and Secure Boot. Extended support for Windows 10 will continue until October 2026 for consumers using Microsoft's cloud for backups, while corporate devices require an Extended Security Updates subscription for updates. The National Cyber Security Centre (NCSC) has warned of security risks associated with outdated operating systems, citing past vulnerabilities and attacks. A report by Forrester highlights the security improvements in Windows 11, including Smart App Control and improved administrator protections. Recent analysis shows a 33% decrease in Windows 10 devices, with projections indicating approximately 121 million PCs will remain operational by the end of support on October 14. Microsoft aims to transition features to user space to enhance security, but challenges exist for older hardware. Windows 11 includes a secure-by-default configuration and integrates AI capabilities, with Gartner predicting significant growth in AI PCs by 2025. ARM-based PCs are gaining interest for their battery life, though compatibility issues persist. Microsoft is collaborating with Qualcomm to develop ARM-based Copilot+ PCs, which may provide a viable alternative to traditional x86 hardware.