Microsoft Build 2026 opens June 2 at Fort Mason Center in San Francisco with AI agents as its central theme. The two-day developer conference, capped at roughly 2,500 in-person attendees, will feature sessions on building AI agents with WinUI 3, controlling autonomous agents from the Windows taskbar, and integrating Model Context Protocol (MCP) at the operating system level, according to PCMag and ChatForest.
CEO Satya Nadella opens the keynote. Scott Guthrie (EVP, Cloud + AI), Scott Hanselman (VP), and Kyle Daigle (COO, GitHub) are confirmed speakers, per ChatForest.
Agents as OS Primitives
The session catalog, already live at build.microsoft.com, spans seven tracks: Agents & Apps, Azure AI Platform, GitHub and developer productivity, Microsoft Fabric, Responsible AI, Windows, and Working with Models. Agents connects every product track as the organizing throughline for the conference, according to ChatForest.
Windows News reports that Build sessions will showcase the Windows Copilot Runtime, a set of on-device APIs that let developers tap local Neural Processing Units for real-time inference on machines running Qualcomm Snapdragon X Elite, Intel Core Ultra, or AMD Ryzen AI processors. Vision, Language, and Speech models running entirely offline are expected to feature prominently.
The Windows Agent Arena, a developer sandbox for autonomous AI agents first announced at Ignite 2025, will get its first public workshop at Build, showing developers how to create agents that interact with Win32, Web, and UWP controls, according to Windows News.
Ask Copilot and Agent Taskbar: Mid-2026 Ship Date Confirmed
A Microsoft internal e-book, first reported by Windows Latest, confirms the timeline for two major features. Ask Copilot will bring Microsoft 365 Copilot and background AI agents directly into the taskbar and Start menu. Click to Do, an on-device vision feature for Copilot+ PCs, will use local models to analyze on-screen content and convert static tables into Excel spreadsheets.
The document states these capabilities are “not yet generally available and [are] expected to come mid-2026,” with an initial rollout targeting enterprise customers, not consumer PCs.
Microsoft’s Yusuf Mehdi, the longtime consumer chief, has pledged to reimagine Windows 11 for the agentic era in his final year before departing, according to Windows Latest.
Azure AI Foundry and Multi-Model Copilot
Beyond Windows, Build 2026 will cover major updates to Azure AI Foundry, Microsoft’s unified AI development platform. The model catalog has grown beyond the 1,900 models available at Build 2025, and the platform now handles multi-model routing, fine-tuning, evaluation, and deployment. Microsoft has rebuilt Copilot into an agent-first, multi-model platform that includes Anthropic models alongside OpenAI, per ChatForest.
The Azure AI Foundry Agent Service, which reached general availability at Build 2025, is expected to receive significant feature additions. Agent-to-Agent (A2A) and MCP protocol support, both introduced last year, are positioned to move from preview to production-ready tooling, according to ChatForest.
From Announcement to Production
Build 2025 launched over 50 announcements under the banner “The Age of AI Agents and Building the Open Agentic Web.” Build 2026 is positioned as the maturation year where those announcements become production infrastructure. For developers building with agent frameworks, the signal is clear: Microsoft is treating agents not as application features but as OS-level services, with the same platform status as networking or file systems.