The tech community is dissatisfied with Microsoft's compatibility requirements for Windows 11, which have made some PCs from six or seven years ago obsolete and ineligible for security updates. Apple's update policy for MacOS is similarly restrictive, with free security updates provided only for the three most recent versions. The upcoming MacOS 26 Tahoe will lead to MacOS 13 Ventura no longer receiving updates, leaving older Macs unsupported due to hardware compatibility issues. Macs from 2017 or earlier will not upgrade to MacOS 14 Sonoma. Users can check compatibility through the "About This Mac" option. For Windows PCs, compatibility with Windows 11 generally requires a CPU from 2019 or later, with Microsoft's PC Health Check app available to identify issues. Windows 10 users can purchase security updates for up to three years after the end of support in October 2025, unlike Mac users. Both platforms typically provide security updates for eight to ten years after release.