Microsoft will end support for Windows 10 in October 2025, meaning it will no longer receive free security updates. To upgrade to Windows 11, a computer must support TPM 2.0, which many older devices lack. A report indicates that about one in five computers could be left behind due to this requirement, particularly those purchased before 2021. Users should check if their device supports TPM 2.0 and consider budgeting for a new computer if it does not.