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Leaked details show Microsoft's shelved 'Copilot OS' was built around AI agents

A newly reviewed leak reveals Microsoft's abandoned Project Aion was designed as a 'Copilot OS' centered on AI agents, underscoring the company's continued AI focus despite current downplaying.

AI News Feed · 2026-08-26 03:40

According to TechRadar, Windows Latest has re-examined the leak first reported by Windows Central, noting that the materials date back to 2024 and carry the codename "Project Aion." The concept was a lightweight, web-based version of Windows that streamed apps to the desktop rather than running them natively, with Copilot at the heart of the experience.

Windows Latest found that a SharePoint site in the leak described the project as a "Copilot OS" and a cross-platform system spanning all devices, generically known as an "Agent OS." The broader idea was an operating system built around "an agent that marshals and organizes all the capabilities of our computers and our clouds on our behalf," referred to as an "agent of agents" or the "outside agent."

The top-level description on the SharePoint site stated: "The version that Microsoft will build should be known as Copilot OS or the Outside Copilot." Another term mentioned was a "self-driving OS," hinting at a desire for an autonomous AI-powered platform. Copilot was envisioned as the "primary way people express, entertain, and educate themselves, and complete tasks across all aspects of their lives."

Despite the project's abandonment, Windows Latest suggests the "odds are already in favor" of the concept staying dead, arguing that Microsoft is clearly backtracking on AI features today. That claim holds some weight, as Microsoft has indeed reversed course from its aggressive AI push in 2025.

However, TechRadar's commentary argues that declaring "Aion is dead" may be premature. While the exact concept may be buried, the leak demonstrates how seriously Microsoft had explored a fully AI-driven desktop. Microsoft is currently reining in AI within Windows 11, in part to placate unhappy users, but the company still sees AI as the future. It simply cannot be vocal about that now, especially as rising memory costs have forced 8GB laptops back onto the market, including some Surface models.

TechRadar notes that Microsoft is still actively working on AI agents for Windows. These agents will gradually shift the operating system toward an AI-centric model, with smaller-scale agents executing dedicated tasks on local PCs with user permission. The downplaying of AI appears to be a strategic pause rather than a permanent retreat, with the next big push likely to be AI agents embedded in Windows.