Microsoft Build 2026: Windows is now an OS for AI agents

[PlanetOftheApes]

Microsoft Build 2026 is running June 2-4 at Fort Mason Center in San Francisco. Satya Nadella opened the keynote declaring that agents are the new operating system for work. Key announcements include Office 365 Copilot Agent Mode with persistent AI agents inside Word, Excel, Teams and Outlook, Windows Agent Framework, Azure Agent Mesh, Copilot Runtime for Windows with local inference APIs, and AgentGuard governance tools for enterprise control.

Build 2026: Microsoft Unleashes AI Agents Across Office 365, Windows, and Azure at San Francisco Keynote

https://windowsnews.ai/article/build-2026-microsoft-unleashes-ai-agents-across-office-365-windows-and-azure-at-san-francisco-keynot.421349

[Freya]

Copilot Runtime letting Win32 apps tap local on-device models without a cloud round trip is the actually useful announcement buried under all the buzzwords

[Golden Dan]

AgentGuard sounds important for enterprise adoption. IT admins need policy controls before they will let agents loose on sensitive data

[Nina81]

Three years of Copilot branding across everything and now they want it to be invisible infrastructure. The pivot is real

[error.404]

The DoD getting a $9.69B Microsoft contract for Azure and Copilot is the clearest signal that agentic AI is being taken seriously at the highest levels

[SGHolly]

Windows 365 for Agents running Cloud PCs for AI workloads is an interesting direction. Keeps the compute off consumer hardware

[ShadowPilot]

I just want Excel to stop crashing when I have 50 tabs open. Agent Mode can wait