The Hallway Track
Governance & Policy

MCP auth: Stop registering, Start linking

Microsoft Developer (Build) · Sep 10, 2026 · Governance & Policy

MCP transitions from dynamic client registration to client ID metadata documents.

“we'd like us to stop registering and I'd like us to stop registering and start linking.”

The latest guidance for Microsoft Cloud Platform (MCP) authentication suggests a shift from using Dynamic Client Registration (DCR) to Client ID Metadata Documents (CIMD). This change is crucial for streamlining the authentication process for clients needing access to MCP services.

MCP authentication Microsoft

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