Microsoft will conclude most support for Windows 10 on October 14, 2025, ending software updates, technical assistance, and security patches. An Extended Security Updates program was introduced in July, allowing select users to extend security updates for an additional year at a cost. A December 2023 report indicated that 47% of accountants still rely on Windows 10. Many CPA firms have not upgraded their systems, with some operating on machines over five years old. Windows 11 has specific hardware requirements, including a neural processing unit (NPU) and a trusted platform module (TPM), which older devices may not meet. Delayed upgrades could lead to rising hardware costs due to supply chain disruptions and tariffs. Firms face uncertainty regarding the potential release of Windows 12, which may influence their decision to upgrade now or wait. Some firms have successfully transitioned to Windows 11, while others are advised to seek external assistance for the upgrade process.