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Windows 11 became publicly available on October 5, 2021. Its fifth anniversary is October 5, 2026. The date marked the start of a phased upgrade for eligible Windows 10 PCs and the arrival of new computers with Windows 11 preinstalled—not a day when every existing PC received the update.
When did Windows 11 come out?
Microsoft announced on August 31, 2021, that Windows 11 would “start to become available on October 5, 2021.” The fifth anniversary of that public availability is October 5, 2026. Microsoft’s announcement said the free upgrade would begin rolling out to eligible Windows 10 PCs, while new PCs preloaded with Windows 11 would also start becoming available.
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There is a reason some launch coverage is dated October 4. In a post published that day, Microsoft executive Panos Panay explained: “As the day becomes October 5 in each time zone around the world, availability of Windows 11 begins through a free upgrade on eligible Windows 10 PCs and on new PCs pre-installed with Windows 11 that can be purchased beginning today.” The post’s date reflects when it was published; the stated public availability date was October 5. Panay’s launch-day post describes the release beginning as October 5 arrived around the world.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesWhy didn’t every Windows 10 PC upgrade that day?
October 5 began the rollout; it was not a universal upgrade deadline. Microsoft described the Windows Update rollout as “phased and measured.” It planned to offer upgrades first to eligible newer devices, then use factors including hardware eligibility, reliability metrics and device age to determine when other PCs would be offered the upgrade. Microsoft’s 2021 announcement forecast that all eligible Windows 10 devices would be offered the upgrade by mid-2022. That was a forecast, not evidence that every eligible computer upgraded or that every PC met the requirements.
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People could also get Windows 11 by buying a new PC with the operating system preinstalled. Organizations had a separate deployment route: IT administrators could manage when and how upgrades were offered to their devices. For a personal computer, the relevant question was whether the machine met the requirements and whether the update had been offered to it—not simply whether the launch date had passed.
What changed at launch?
Microsoft’s 2021 launch announcement emphasized a redesigned interface and sounds, a Start experience focused on the user and recent files, and tools for arranging work across the screen. These were launch-era highlights, not a complete description of Windows 11 today; features and plans have evolved since the original release. Microsoft’s launch post highlighted:
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- Multitasking is easy with 16GB of RAM
- Equipped with a blazing fast Core i5 2.00 GHz processor.
- Snap Layouts and Snap Groups: ways to arrange open windows into layouts and return to a group of apps arranged together.
- Desktops: separate desktop spaces intended to help organize different activities.
- Teams Chat in the taskbar: a launch-era integration Microsoft presented as a quick way to connect with others.
- A refreshed design and Start experience: updated visuals and a Start menu that brought recent files and other content closer to the user.
Can a PC upgrade to Windows 11?
Eligibility depends on the specific device, not just whether it runs Windows 10. Microsoft’s current Windows 11 requirements include these minimums:
- A compatible 64-bit processor running at 1 GHz or faster, with two or more cores.
- 4 GB of RAM and at least 64 GB of storage.
- UEFI firmware capable of Secure Boot and a Trusted Platform Module (TPM) version 2.0.
- DirectX 12-compatible graphics with a WDDM 2.0 driver.
- A high-definition display at least 9 inches diagonally.
Updates and some features may need additional resources. Internet access is needed for updates and some features. Microsoft says Windows 11 Home requires internet access and a Microsoft account to complete first-use setup; its consumer requirements page also applies those setup conditions to Windows 11 Pro for personal use. Check the current requirements for the edition and setup situation that apply to you.
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Is Windows 11 still supported?
Windows 11 support is tied to the installed release and edition, rather than one end date for the entire operating system. Microsoft’s lifecycle table lists Windows 11 Home and Pro version 25H2 as ending support on October 13, 2027, and version 24H2 on October 14, 2026. Those are release-specific dates, not a statement that all Windows 11 support ends in 2027. Check Microsoft’s current lifecycle table and confirm the version installed on your PC, since dates and supported releases can change.
The original Windows 11 release was version 21H2. At launch, Microsoft’s guidance gave Home and Pro 24 months of servicing and Enterprise and Education 36 months; those were historical launch-era timelines. Current support should be checked against the lifecycle entry for the installed version and edition.
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- 【Vibrant Display】 15.6-inch Full HD (1920x1080) anti-glare screen with 16:9 aspect ratio delivers crisp images and vivid colors – perfect for studying, watching lectures, or entertainment. Thin-bezel design maximizes viewing area
- 【Fast Connectivity & Expansion】 Equipped with WiFi 6 (802.11ax) and Bluetooth 5.2 for stable, high-speed wireless. Features 3 x USB 3.0, HDMI 2.1, Type-C (supports PD3.0 fast charging), and a TF card slot expandable up to 2TB – easily connect external monitors, mice, drives, or expand storage for all your files
- 【Long Battery Life & Portable】 Built-in 11.55V 5000mAh/57.75Wh high-capacity battery delivers approximately 7 hours of mixed-use battery life – enough for a full day of classes and assignments. Lightweight at just 1.63kg (3.6 lbs) and 19.5mm thin, plus a compact packing size – easily slips into a backpack for campus, library, or coffee shop
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