Microsoft has initiated the rollout of the Windows 11 25H2 update, affecting millions of users worldwide. Support for Windows 11 24H2 will be discontinued in the upcoming months, making the upgrade to 25H2 mandatory for those still using 24H2.
Organizations are transitioning from Windows 10 to Windows 11 following the end-of-support date for Windows 10. Windows 11 is designed to support most applications that ran on Windows 10, but challenges may arise due to undocumented legacy applications and configurations. A thorough evaluation of devices, including installed applications and data locations, is essential to minimize disruptions during the upgrade.
Migrations can be categorized as clean installations or in-place upgrades. A clean installation erases the previous OS and data, while an in-place upgrade retains existing settings and applications. In-place upgrades are not allowed for certain transitions, such as from Windows 10 Home to Windows 11 Pro without first upgrading to Windows 10 Pro. IT professionals often prefer clean installations to avoid carrying over issues from the previous OS.
During an in-place upgrade, data in library folders is retained, but data in the Windows folder may be at risk. Compatibility issues may arise with poorly designed applications or drivers post-upgrade, particularly with legacy applications reliant on outdated frameworks.
Preparation for migration includes creating an inventory of applications, identifying potential incompatibilities, and ensuring backups of data. IT must also confirm hardware meets Windows 11 requirements. If a clean installation is chosen, strategies for application installation must be developed, utilizing tools like System Center Configuration Manager or Microsoft Intune.
Validation and testing of migration tools should occur in a lab environment, followed by a pilot deployment on a small percentage of machines. After successful pilot testing, the final deployment can proceed, followed by an audit to address any issues. Careful planning and testing are crucial for a smooth migration process.
Windows 11 has surpassed 1 billion users worldwide, achieving this milestone 1,576 days after its public launch on October 5, 2021. In comparison, Windows 10 reached the same mark in 1,692 days after its launch on July 29, 2015. Windows 11 is a free upgrade for Windows 10 users, but its higher system requirements have made many Windows 10 PCs ineligible for the upgrade. Currently, between 50 and 55 percent of Windows PCs globally are using Windows 11, while approximately 40 to 45 percent are still on Windows 10. Estimates suggest that hundreds of millions of devices continue to run Windows 10, even after its official end-of-support date last October. By late 2025, around 1 billion active Windows 10 PCs are expected to still be in use, with about 500 million unable to upgrade due to hardware limitations.
Microsoft's Windows 11 version 24H2 shows performance improvements in gaming, with frame rate enhancements ranging from 2% to 8% across various titles, particularly benefiting newer DirectX 12 games. However, users report significant stability issues, including Blue Screen of Death (BSOD) errors, crashes during gameplay, and compatibility problems with certain hardware and software. These issues affect a wide range of systems, suggesting systemic challenges rather than isolated incidents. The operating system's hardware compatibility requirements, such as TPM 2.0 support, have also limited upgrade eligibility for many users. Microsoft has acknowledged specific issues related to Intel and AMD processors, antivirus software conflicts, and outdated drivers. Despite ongoing patch deployments, user frustration persists due to the slow pace of fixes. The stability concerns have led some businesses to delay Windows 11 24H2 deployments, prioritizing reliability over performance gains. The driver ecosystem's lag in updates from hardware manufacturers has further complicated stability. The gaming community remains divided, with many users opting to stay on Windows 10 due to these stability risks.
Windows 11 has been tested on a Lenovo ThinkPad X220, revealing it to perform poorly compared to its predecessors, particularly Windows 8.1, which excelled in benchmarks for boot times and application launches. The test involved various Windows versions (XP, Vista, 7, 8.1, 10, and 11) on the same aging hardware, highlighting that Windows 11 consistently finished last in most categories. The ThinkPad X220 does not meet Windows 11’s minimum requirements, lacking essential components like TPM 2.0 and a compatible processor, which may have skewed the results. Critics argue that using outdated hardware for testing is not representative, suggesting that a fair comparison would involve flagship devices from each generation. Windows 11's architecture is designed for modern multicore CPUs and SSDs, which may struggle on older hardware. Additionally, Windows 11 has heavier overheads due to advanced security features, which consume resources that older operating systems do not. User feedback indicates frustration with Windows 11's performance on legacy hardware compared to leaner alternatives like Linux. Despite Microsoft promoting optimizations in Windows 11, these did not manifest in the ThinkPad test, and the findings raise concerns for businesses considering upgrades as Windows 10 approaches its end-of-support date in 2025.
Windows updates will roll out automatically on November 11. Official support for Windows 10 has ended, meaning PCs with default settings will no longer receive monthly security updates. Microsoft has introduced Extended Security Updates (ESU) for Windows 10, allowing users to receive security updates until October 2026. Any personal Windows 10 PC running version 22H2 can access free ESU subscriptions, excluding Enterprise and Education editions. Enrollment requires a Microsoft account and is available for up to 10 PCs. In Europe, customers in the EEA qualify for free ESU subscriptions without needing a Microsoft account. Enterprise customers will incur higher costs for commercial ESU subscriptions. Users must ensure they meet eligibility requirements to see the ESU offer.
This month's Windows updates will roll out automatically on Patch Tuesday, November 11. Official support for Windows 10 has concluded, meaning PCs running this operating system with default settings will no longer receive essential monthly security updates from Microsoft. Microsoft has introduced options for users to continue receiving critical security updates until October 2026. The Extended Security Updates (ESU) for Windows 10 consumer PCs are available for free enrollment, particularly for those who do not qualify for a free Windows 11 upgrade. ESU coverage begins immediately and extends through October 13, 2026, for personal devices. Users must sign in with a Microsoft account to activate the subscription, which can be applied to up to ten PCs. The ESU subscription is available for personal Windows 10 PCs running version 22H2, excluding Enterprise and Education editions. Users in Europe qualify for free ESU subscriptions without needing a Microsoft account. Enrollment can be initiated through the Settings menu under Windows Update. Enterprise customers are not eligible for free ESU options and must pay a fee starting at per device per year. If the ESU offer does not appear, users should ensure all requirements are met, including the installation of the latest updates for Windows 10, version 22H2. Users should be cautious of the default 5GB storage limit on OneDrive when syncing settings to the cloud.
Microsoft has expanded the rollout of Windows 11 25H2, making it available to all users who actively seek the upgrade. For users on Windows 11 versions 23H2, 22H2, or 21H1, the upgrade to 25H2 will be auto-installed, especially as version 23H2 has reached its end-of-life on November 11. Windows 10 users will not be forced to upgrade to Windows 11 25H2; they can choose to upgrade when prompted. Windows 11 25H2 is available as an optional upgrade for Windows 10 users, marking a change from previous practices.
As of October 14, 2025, Windows 10 will no longer receive security updates, affecting all editions including Home, Pro, and Enterprise. Microsoft has introduced an Extended Security Updates (ESU) program, allowing users to enroll for an additional year of security updates until October 2026. The ESU program is free for users who sign in with a Microsoft account and sync their settings to the cloud, while residents of the European Economic Area can access it at no cost without cloud synchronization, although they must sign in every 60 days. Alternatives to consider include upgrading to Windows 11, which has hardware requirements like a Trusted Platform Module (TPM) 2.0, or switching to other operating systems such as Linux distributions or ChromeOS. WINUX is a Linux-based distribution resembling Windows 11. Users can also purchase new PCs like the ASUS Zenbook A14 (2025) or Microsoft's Surface Pro 11 to avoid disruptions when Windows 10 support ends.
Windows 10 reached its end-of-support date on October 14, 2025, concluding monthly security updates for over 1 billion PCs. Users with incompatible devices cannot upgrade to Windows 11 via Windows Update and are advised to purchase new hardware. Microsoft will offer Extended Security Updates (ESUs) for Windows 10 on a subscription basis for three years post end-of-support, with costs varying for consumers, educational institutions, and businesses. Users can also consider buying new PCs, renting a virtual PC through Windows 365, upgrading incompatible hardware to Windows 11 using specific methods, switching to a Linux distribution or ChromeOS Flex, or continuing to use Windows 10 without support, which poses security risks.