Skip to main content

Windows 10 ‘Lean’ shows up in a preview build for Windows Insiders

Image used with permission by copyright holder

A recent Skip Ahead build of Windows 10 served up to Windows Insider participants, version 17650, ships with a new variant called Windows 10 Lean (or CloudE). The x64-based installer for this specific variant is reportedly 2GB smaller in size than Windows 10 Pro and packs a slightly different restricted environment than Microsoft’s recent stab at the education sector with Windows 10 S. It also appears to have a small, limited number of pre-installed first-party apps after installation including Edge, OneDrive, and OneNote. 

Recommended Videos

With Windows 10 Lean, specific tools are reportedly missing such as the registry editor and the Microsoft Management Console, but the platform doesn’t appear to restrict app and program installs to the Microsoft Store like Windows 10 S. Instead, Microsoft provides a “lite” operating system for the general user stuffed with the basic essentials to get you started. Microsoft doesn’t even plaster the desktop background with wallpaper. 

With Windows 10 S, Microsoft provides a full installation of Windows 10 Pro, but introduces an “S Mode” as a new layer that disables software installation outside the Microsoft Store. It’s also tweaked to run on low-end hardware so the platform and its associated PCs can better compete with Chromebooks in the education sector. Rather than labeling the platform as Windows 10 Pro in S Mode, the company simply shortened the name to Windows 10 S. 

But there’s speculation that Windows 10 Lean could merely be an “S Mode” for the Enterprise or Home version of Windows 10. Given the additional “CloudE” listing associated with this “lean” build, we can’t help but speculate that it’s Windows 10 Enterprise in S Mode. After all, employees have no business tweaking the PC’s registry hence the tool’s removal. 

Microsoft’s Joe Belfiore said in March that S Mode will be offered for Windows 10 Home and Windows 10 Enterprise in the next update “coming soon.” He is referring to the Spring Creators Update launching in May, aka Redstone 4, which will see the demise of Microsoft’s Windows 10 S brand. Instead, customers can purchase a Windows 10 Pro, Home, or Enterprise device with S Mode already enabled. 

“If a customer does want to switch out of S Mode, they will be able to do so at no charge, regardless of edition,” he said. “We expect to see new Windows 10 devices ship with S Mode, available from our partners in the coming months.” 

Hands-on experiences with Windows 10 Lean reveal that the platform doesn’t include drivers for optical drives. It also doesn’t provide download prompts in Microsoft Edge, thus you can’t download files “out of the box.” Even more, Microsoft’s traditional Office installer won’t install the software for unknown reasons. 

“With Microsoft’s great tradition of meaningful error reporting, the installer just plays the error sound without displaying any additional dialog whatsoever,” says the user who originally revealed Windows 10 Lean on Twitter. 

We will likely find out more about Windows 10 Lean during Microsoft’s BUILD developers conference in May. Belfiore will be one of the speakers talking about the Windows platform and will possibly spill the Windows 10 Lean beans if CEO Satya Nadella didn’t already in his initial keynote.

Kevin Parrish
Former Digital Trends Contributor
Kevin started taking PCs apart in the 90s when Quake was on the way and his PC lacked the required components. Since then…
Another frustrating reason to upgrade to Windows 11
A person looking frustrated at a laptop while sitting at a table.

As if you didn't already need plenty of reasons to finally upgrade to Windows 11, here's yet another.

The latest Windows 10 update, version KB5048239, isn't just failing to install -- it's actually updating successfully over and over again. This is the update that Microsoft first released in November 2024 on 21H2 and 22H2. As TechRadar reports, the software giant is rereleasing it again this month.

Read more
Windows 11 can now run on unsupported systems, but there’s a catch
A laptop sits on a desk with a Windows 11 wallpaper.

Microsoft is now allowing users to update to Windows 11 on older, unsupported hardware, including systems that don’t meet the operating system’s strict hardware requirements.

While the company initially set these requirements — including the need for a TPM 2.0 chip and specific processor models — to ensure performance, reliability, and security, it has now provided a manual installation option for those who want to use Windows 11 on unsupported machines.

Read more
Is Windows 11 acting up for you? This might be why
The Surface Pro 11 on a white table in front of a window.

This year's big Windows 11 update, 24H2, started a phased rollout in October and just became available to more PCs yesterday, December 4, as spotted by Windows Latest. To check if your PC is ready for it, just head to the settings page and check for updates -- if an update is not there for download yet, you'll have to wait until later in the rollout process.

Getting new things first isn't always a good thing when it comes to software, however. It can take quite a while for a new Windows build to be announced as "stable," and 24H2 is far from earning that title at the moment.

Read more