Which is the smallest Windows 10 version?

The latest build of Windows 10 contains a new slimmer installation option called Windows 10 Lean that cuts out some features in exchange for saving space.

Building a slide deck, pitch, or presentation? Here are the big takeaways:

  • A new stripped-down Windows 10 build called “Lean” was discovered in the latest Insider preview of Windows 10. It lacks many Windows 10 features and has a 2GB smaller installation size.
  • Microsoft hasn’t said what Lean’s purpose is, but it appears to be for lower-end machines or those that need to be locked down from user tampering.

Microsoft’s latest Windows Insider skip ahead build contains a new version of Windows 10 called Windows 10 Lean, which cuts the installation size by 2 GB.

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Discovered by Twitter user Lucan, Windows 10 Lean cuts out several Windows 10 features: desktop wallpaper is disabled by default, the Microsoft Management Console and registry editor are missing, drivers for CD and DVD drives can’t be installed, Microsoft Edge doesn’t allow downloads, and Microsoft Office is missing as well.

At first glance it may seem that Windows 10 Lean is an alternative to Windows 10 S (which only allows app installation from the Windows Store), but Lucan quickly dismissed that by saying that those restrictions don’t apply, as he was able to run applications normally locked to Windows 10 S users.

What is Windows 10 Lean’s purpose?

The Twitter discussion growing up around Lucan’s discovery of Windows 10 Lean is devoid of one important thing: an explanation as to its purpose.

Mary Jo Foley from TechRepublic sister site ZDNet speculated that it was a version of Windows 10 S for home or enterprise, but Lucan said he doesn’t think that’s the case. Windows 10 S, he said, is more like a set of restrictions on top of a standard Windows 10 install, which Lean definitely isn’t.

Another Twitter commenter said it may be ideal for educational use, as schools often have older computers that need a smaller install. Add to that the heavy restrictions on what a user can do in Windows 10 Lean (no downloading, no Regedit, etc.) and you have a relatively resilient OS that has lower-end hardware requirements.

SEE: Securing Windows policy (Tech Pro Research)

WIndows 10 Lean could make a great OS for any systems that see a lot of user contact: Loaner machines, kiosks, sales floor demos, and other specific roles would be a great fit for Lean.

Anyone who has ever managed computers that see a lot of public contact knows they have to be locked down, and Windows 10 Lean seems designed for that particular purpose. There are a lot of things users can’t do in a base install of Lean, leaving it up to an administrator to pre-load an installation with certain software or settings that would be largely unalterable.

Given the limits of WIndows 10 Lean it’s likely that it’s designed to save space, be a quick install, and be customized as an image prior to being installed. Lean images could be configured to suit specific roles, and users would be largely unable to damage them.

We won’t know what Windows 10 Lean is really designed for until Microsoft says so, but If you want to check it out now you can do so in Redstone 5 Insider preview build 17650, available now to Windows Insider members.

Windows 10 has several editions, all with varying feature sets, use cases, or intended devices. Certain editions are distributed only on devices directly from an original equipment manufacturer (OEM), while editions such as Enterprise and Education are only available through volume licensing channels. Microsoft also makes editions of Windows 10 available to device manufacturers for use on specific classes of devices, including IoT devices and previously marketed Windows 10 Mobile for smartphones.

Baseline editions[edit]

Baseline editions are the only editions available as standalone purchases in retail outlets. PCs often come pre-installed with one of these editions.

HomeWindows 10 Home is designed for use in PCs, tablets and 2-in-1 PCs. It includes all features directed at consumers.[1][2][3]ProWindows 10 Pro includes all features of Windows 10 Home, with additional capabilities that are oriented towards professionals and business environments, such as Active Directory, Remote Desktop, BitLocker, Hyper-V, and Windows Defender Device Guard.[1][2][3]Pro for WorkstationsWindows 10 Pro for Workstations is designed for high-end hardware for intensive computing tasks and supports Intel Xeon, AMD Opteron and the latest AMD Epyc processors; up to four CPUs; up to 6 TB RAM; the ReFS file system; Non-Volatile Dual In-line Memory Module (NVDIMM); and remote direct memory access (RDMA).[4][5][6]

Organizational editions[edit]

These editions add features to facilitate centralized control of many installations of the OS within an organization. The main avenue of acquiring them is a volume licensing contract with Microsoft.

Windows 10 Education is distributed through Academic Volume Licensing. It was based on Windows 10 Enterprise and initially reported to have the same feature set.[1][2][3] As of version 1709, however, this edition has fewer features. See § Comparison chart for details.This edition was introduced in July 2016 for hardware partners on new devices purchased with the discounted K–12 academic license. It was based on the Pro edition of Windows 10 and contains mostly the same features as Windows 10 Pro with different options disabled by default, and adds options for setup and deployment in an education environment. It also features a "Set Up School PCs" app that allows provisioning of settings using a USB flash drive, and does not include Cortana, Microsoft Store suggestions, Windows Sandbox, or Windows Spotlight.[7]EnterpriseWindows 10 Enterprise provides all the features of Windows 10 Pro for Workstations, with additional features to assist with IT-based organizations.[1][2][3] Windows 10 Enterprise is configurable on two servicing channels, Semi-Annual Channel and Windows Insider Program.[10]Enterprise LTSCEnterprise LTSC (Long-Term Servicing Channel) (formerly LTSB, Long-Term Servicing Branch) is a long-term support variant of Windows 10 Enterprise released every 2 to 3 years. Each release is supported with security updates for either 5 or 10 years after its release, and intentionally receive no feature updates.[11] Some features, including the Microsoft Store and bundled apps, are not included in this edition.[12][1][3] This edition was first released as Windows 10 Enterprise LTSB (Long-Term Servicing Branch).[13] There are currently 4 releases of LTSC: one in 2015 (version 1507), one in 2016 (version 1607), one in 2018 (labeled as 2019, version 1809), and one in 2021 (version 21H2).[14][15]

Since 2018, OEMs can ship Windows 10 Home and Pro in a feature-limited variation named S mode which evolved from the discontinued Windows 10 S. Organizations employing Windows 10 Enterprise or Windows 10 Education can make use of S mode too.[16] S mode is a feature-limited edition of Windows 10 designed primarily for low-end devices in the education market. It has a faster initial setup and login process, and allows devices to be provisioned using a USB drive with the "Set Up School PCs" app.

With the exception of the Microsoft Teams desktop client which was made available for S mode in April 2019,[citation needed] the installation of software (both Universal Windows Platform (UWP) and Windows API apps) is only possible through the Microsoft Store, and command line programs or shells (even from Microsoft Store) are not allowed.[17][18][19][20] System settings are locked to allow only Microsoft Edge as the default web browser with Bing as its search engine.[21] The operating system may be switched out of S mode using the Microsoft Store for free. However, once S Mode is turned off, it cannot be re-enabled.[22][23] All Windows 10 devices in S mode include a free one-year subscription to Minecraft: Education Edition. Critics have compared the edition to Windows RT, and have considered it to be an alternative to ChromeOS.[22][24][25][26][27]

Device-specific editions[edit]

These editions are licensed to OEMs only, and are primarily obtained via the purchase of hardware that includes it:

HolographicA specific edition used by Microsoft's HoloLens mixed reality smartglasses.[28][29]IoT EnterpriseA rebranded variant of Microsoft's earlier embedded operating systems, Windows Embedded. Designed specifically for use in small footprint, low-cost devices and IoT scenarios.[30][31] IoT Core was discontinued on October 11, 2020.[32][33]TeamA specific edition used by Microsoft's Surface Hub interactive whiteboard.[34]

Discontinued editions[edit]

The following editions of Windows 10 were discontinued (as of Windows 10 version 21H2). For both Mobile and Mobile Enterprise, Microsoft confirmed it was exiting the consumer mobile devices market, so no successor product is available.[35]

MobileWindows 10 Mobile was designed for smartphones and small tablets. It included all basic consumer features, including Continuum capability. It was the de facto successor of Windows Phone 8.1 and Windows RT.[1][2]Mobile EnterpriseWindows 10 Mobile Enterprise provided all of the features in Windows 10 Mobile, with additional features to assist IT-based organizations, in a manner similar to Windows 10 Enterprise, but optimized for mobile devices.[1][2]IoT MobileA binary equivalent of Windows 10 Mobile Enterprise licensed for IoT applications. Also known as IoT Mobile Enterprise.[36][37]SWindows 10 S was an edition released in 2017 which ultimately evolved into the so-called S mode of Windows 10. In March 2018, Microsoft announced that it would be phasing out Windows 10 S, citing confusion among manufacturers and end-users.[38][39]10X

Originally announced for use on dual-screen devices such as the Surface Neo and other potential form factors, 10X featured a modified user interface designed around context specific interactions or "postures" on such devices, including a redesigned Start menu with no tiles, and use of container technology to run Win32 software.[40][41] The platform was described as a more direct competitor to ChromeOS.[42][43] On May 4, 2020, Microsoft announced that Windows 10X would first be used on single-screen devices, and that they will "continue to look for the right moment, in conjunction with our OEM partners, to bring dual-screen devices to market".[44] On May 18, 2021, Head of Windows Servicing and Delivery John Cable stated that Windows 10X had been cancelled, and that its foundational technologies would be leveraged for future Microsoft products.[45] Microsoft also added anti-theft protection to Windows 10X, just like how Apple's Activation Lock and anti-theft protection on Android devices and Chromebooks work.[46] Several design changes in 10X, notably the centered taskbar and redesigned start menu, would be later introduced in Windows 11.[47]

Regional variations[edit]

N/KNAs with previous versions of Windows since Windows XP, all Windows 10 editions for PC hardware have "N" and "KN" variations in Europe and South Korea that exclude certain bundled multimedia functionality, including media players and related components, in order to comply with antitrust rulings. The "Media Feature Pack" can be installed to restore these features.[48] The variation cannot be changed without a clean install, and keys for one variation will not work on other variations.Home with BingAs with Windows 8.1, a reduced-price "Windows 10 with Bing" SKU is available to OEMs; it is subsidized by having Microsoft's Bing search engine set as default, which cannot be changed to a different search engine by OEMs. It is intended primarily for low-cost devices, and is otherwise identical to Windows 10 Home.[49]Home Single LanguageIn some emerging markets,[citation needed] OEMs preinstall a variation of Windows 10 Home called Single Language without the ability to switch the display language. It is otherwise identical to Windows 10 Home. To change display language, the user will need to upgrade to Windows 10 Home or Windows 10 Pro.China Government EditionIn May 2017, it was reported that Microsoft, as part of its partnership with China Electronics Technology Group, created a specially-modified variant of Windows 10 Enterprise ("G") designed for use within branches of the Chinese government. This variant is pre-configured to "remove features that are not needed by Chinese government employees", and allow the use of its internal encryption algorithms.[50][51]

Comparison chart[edit]

GuideItemMeaningYesFeature is present in the given editionYes, since [update]Feature is present in the given edition after installing a certain updateNoFeature is absent from the given editionNo, since [update]Feature is absent from the given edition after installing a certain update (It might have been fully or partly present prior to that update)[Explanation]Feature is partly present in the given edition[Explanation], since [update]Feature is partly present in the given edition, after installing a certain update (It might have been fully present prior to that update, or not present at all)


[1] The 4 GB limit for 32-bit editions is a limitation of the 32-bit addressing, not of Windows 10 itself. In practice, less than 4 GB of memory is addressable as the 4 GB space also includes the memory mapped peripherals.

Microsoft OEM licensing formula takes display size, RAM capacity and storage capacity into account. In mid-2015, devices with 4 GB RAM were expected to be $20 more expensive than devices with 2 GB RAM.[73]

Upgrade path[edit]

Free upgrade[edit]

At the time of launch, Microsoft deemed Windows 7 (with Service Pack 1) and Windows 8.1 users eligible to upgrade to Windows 10 free of charge, so long as the upgrade took place within one year of Windows 10's initial release date. Windows RT and the respective Enterprise editions of Windows 7, 8, and 8.1 were excluded from this offer.[74]

Windows 10 free upgrade matrixWindows version and editionWindows 10 editionWindows 7 StarterHomeWindows 7 Home BasicWindows 7 Home PremiumWindows 8.1 with BingWindows 8.1Windows 7 ProfessionalProWindows 7 UltimateWindows 8.1 ProWindows Phone 8.1Mobile

Commercial upgrade[edit]

The following table summarizes possible upgrade paths that can be taken, provided that proper licenses are purchased.
There is no upgrade path that can allow Windows RT 8.1 devices to install Windows 10.

GuideItemMeaningUpgradeUpgrade is possible, preserving apps, settings and dataCleanUpgrade is possible, but all apps, settings and data are lost.DowngradeUpgrade is possible, but some features are lost.—Upgrade is impossible under any circumstances.Same EditionThe Windows edition and the Upgrade target are the same.Supported upgrade targets[75]Windows
versionWindows
editionUpgrade targetWindows
10 HomeWindows
10 ProWindows 10
Pro for WorkstationsWindows 10
Pro (Education)Windows 10
EducationWindows 10
EnterpriseWindows 10
MobileWindows 7StarterUpgradeUpgradeUpgradeUpgradeUpgradeClean—Home BasicUpgradeUpgradeUpgradeUpgradeUpgradeClean—Home PremiumUpgradeUpgradeUpgradeUpgradeUpgradeClean—ProfessionalDowngradeUpgradeUpgradeUpgradeUpgradeUpgrade—UltimateDowngradeUpgradeUpgradeUpgradeUpgradeUpgrade—EnterpriseCleanCleanUpgradeCleanUpgradeUpgrade—Windows 8.1(Core)UpgradeUpgradeUpgradeUpgradeUpgradeClean—with BingUpgradeUpgradeUpgradeUpgradeUpgradeClean—ProDowngradeUpgradeUpgradeUpgradeUpgradeUpgrade—Pro for StudentsDowngradeUpgradeUpgradeUpgradeUpgradeUpgrade—Pro with Media CenterDowngradeUpgradeUpgradeUpgradeUpgradeUpgrade—EnterpriseCleanCleanCleanCleanUpgradeUpgrade—Embedded IndustryCleanCleanCleanCleanCleanUpgrade—Phone 8.1——————UpgradeWindows 10HomeSame EditionUpgradeUpgradeUpgradeUpgradeUpgrade—ProDowngradeSame EditionUpgradeUpgradeUpgradeUpgrade—Pro for WorkstationsDowngradeDowngradeSame EditionUpgradeUpgradeUpgrade—Pro EducationDowngradeUpgradeUpgradeSame EditionCleanClean—EducationCleanCleanCleanCleanSame EditionUpgrade—EnterpriseCleanCleanCleanCleanDowngradeSame Edition—Mobile——————Same Edition

Release branches[edit]

New releases of Windows 10, called feature updates,[12] are released twice a year as a free update for existing Windows 10 users. Each feature update contains new features and other changes to the operating system. The pace at which a system receives feature updates is dependent on the release branch from which the system downloads its updates. Windows 10 Pro, Enterprise and Education could optionally use a branch, which is defunct since version 1903, that received updates at a slower pace. These modes could be managed through system settings, Windows Server Update Services (WSUS), Windows Update for Business, Group Policy or through mobile device management systems such as Microsoft Intune.[12]

How small can Windows 10 get?

Windows 10 Cannot Get Any Smaller As of the 1903 update, Windows 10 requires a flat 32GB of space. If your device has a 32GB hard drive, there is no way for you to create enough space for Windows 10 1903.

Can Windows 10 run on 1GB?

1GB of RAM is the minimum system requirement for the 32-bit version of Windows 10, and while I've gotten Windows 10 to run on this much RAM, I don't recommend it.

Is Windows 11 smaller in size than Windows 10?

If you're upgrading directly from Windows 10 to Windows 11, the download size is about 3.5 GB. And, you need to make sure that you have at least 64GB of free space. If you install Windows 11 using an . ISO file, plan on having 25 GB of free space at least.

Is there a 32

Windows 10 can run on both 32-bit and 64-bit processor architectures. If you have a computer with a 32-bit setup, you can upgrade to the 64-bit version without acquiring a new license. The only caveat is that there is no in-place upgrade path to make the switch.