M365 MCP don't work with Claude (Desktop)
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@g2vinay is already working on this.
Since Aug 26, 2026.
customer-reported
needs-team-attention
question
server-Azure.Mcp
tools-Authentication
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Description
As I found it difficult to figure out why I couldn't get the M365 MCP servers to work, I'm adding an issue here for visibility.
See also https://github.com/anthropics/claude-code/issues/47975#issuecomment-4365394534:
What needs to change on the Microsoft side: agent365 currently rejects DCR (does not support dynamic client registration) and doesn't advertise CIMD, so third-party MCP clients have no way to present their own client_id and redirect_uri. Supporting either would resolve this for every client, not just us. We're escalating this to Microsoft directly and will update here.
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