At the Build 2025 event today, Microsoft revealed that Windows 11 will soon feature native support for MCP (Model Context Protocol). For those unfamiliar, MCP is an open standard developed by Anthropic that enables AI models to interact with external data, APIs, and services. This integration is set to power AI agents on Windows 11 by leveraging external data sources.
David Weston, Microsoft’s VP of OS Security, stated, “Windows 11 will support developers building intelligent applications that want to use MCP and generative AI capabilities to build applications centered around generative AI and intelligence which can leverage MCP where appropriate to take actions on behalf of the user.”
Alongside the introduction of MCP on Windows 11, Microsoft is placing a strong emphasis on enhancing security. To establish a secure agentic architecture, the company is addressing several threat vectors, including Cross-Prompt Injection, Authentication Gaps, Credential Leakage, Tool Poisoning, and others.
Additionally, Microsoft stated that “Only MCP servers which meet a baseline security criteria will be available in the Windows Registry.” The company also emphasized that the principle of least privilege will be applied to reduce the potential impact of any attacks involving an MCP server.
The private preview of MCP integration in Windows 11 will be released to developers after the Build event to gather feedback.
