Windows 7 Slimmed to 69 MB as Proof of Concept

31 Oct 2025

A developer known as @XenoPanther has reduced Windows 7 to a mere 69 MB. This impressive reduction exemplifies the ongoing efforts to strip operating systems to their bare essentials, often to mitigate bloated installations.

Developer's Approach and Purpose

On 2023-09-15, @XenoPanther shared the downsized file list on X (formerly Twitter), indicating that this was a proof of concept rather than a functional operating system. The significantly reduced version of Windows 7 can't run much due to numerous missing critical files, such as those for graphical user interfaces. However, the system does boot and, intriguingly, a command-line application that relies only on the Windows kernel could potentially function.

Historical Context and Applications

Efforts to minimize Windows' footprint are not new. Microsoft showcased a 400 MB version of Windows Server in 2015, later focusing on Nano Server to create a container image under 300 MB. These reductions in size are not merely academic; they have practical applications in shrinking virtual machines and container images, crucial for efficient storage and quick deployments.

For legacy software, having a reduced version of Windows 7 could potentially allow the operation of old applications without the need for a full installation, which remains a consideration despite the OS's obsolescence.

Future Implications and Enthusiast Community

While this version of Windows 7 is largely a hobbyist endeavor, it signals a potential for creative solutions in software optimization. Despite its limited functionality, this undertaking challenges other enthusiasts to further explore the minimal feasible size for Windows systems. It is a compelling example of how the tech community continues to find innovative methods to optimize and maintain older technology for niche applications.

Close All Windows

Close All Windows download for free to PC or mobile

Latest update Close All Windows download for free for Windows PC or Android mobile

4
556 reviews
3245 downloads

News and reviews about Close All Windows

01 Nov 2025

Windows 7 Minimal Build Fits Into Just 69 MB

A Windows 7 enthusiast builds a 69 MB version of the OS, pushing limits of lightweight system design.

Read more

01 Nov 2025

Boost Windows 11 Arm with Improved x64 Emulation

Microsoft enhances Windows 11 25H2 with update KB5067115: better x64 emulation on Arm, boosting app performance.

Read more

31 Oct 2025

YouTube's AI Moderation Removes Windows 11 Install Guides

YouTube's AI moderation removed videos on Windows 11 installation workarounds, sparking creators' concerns.

Read more

31 Oct 2025

Windows 7 Slimmed to 69 MB as Proof of Concept

A developer has reduced Windows 7 to 69 MB, highlighting efforts to minimize OS bloat.

Read more

30 Oct 2025

Windows 11 26H1 Update to Launch in 2024 with Limited Availability

Microsoft plans Windows 11 26H1 release early 2024; testing starts on NPU-equipped PCs using Windows on Arm.

Read more

29 Oct 2025

Windows 11 Updates: Copilot+ Enhancements and New Features

Microsoft updates Windows 11, featuring Copilot+, voice access, and taskbar improvements, as part of a Controlled Feature Release.

Read more

29 Oct 2025

Windows 11 Adds Key Features with October 2025 Update

Microsoft releases October 2025 Windows 11 update KB5067036 with new Copilot features, File Explorer improvements, and better voice access.

Read more

29 Oct 2025

Windows 11 Update KB5067112 Introduces Personalized Offers

Windows 11's KB5067112 update adds Personalized Offers to OOBE and fixes touch keyboard and network issues. Available now for 23H2.

Read more

26 Oct 2025

Windows95 Revived Using Floppy Drives and FlashPath

Windows95 runs on a floppy setup using FlashPath, offering a unique view into tech history.

Read more

26 Oct 2025

Windows Evolution: From XP to Windows 11

Windows has evolved since XP, improving design and multitasking, despite some criticisms.

Read more