Power Platform Community Forum Thread Details

Hi all,

I’m currently integrating HubSpot with Copilot Studio using Remote HubSpot’s MCP server.

The MCP server is configured with OAuth 2.1, and I’ve confirmed that the authentication flow works correctly using the MCP Inspector. However, when I try to connect to the same MCP server from an agent in Copilot Studio, the connection fails.

From what I can see, this appears to be related to the authentication protocol on the Copilot Studio side. It looks like the Copilot Studio MCP connector currently expects OAuth 2.0, which may be causing incompatibility with HubSpot’s OAuth 2.1 implementation.

My questions are:

Does Copilot Studio’s MCP connector currently support OAuth 2.1, or if OAuth 2.1 is not yet supported, is there any roadmap or timeline for when it will be implemented?
Has anyone found a workaround when integrating MCP servers that require OAuth 2.1?

Any insight or from others who’ve run into a similar issue would be greatly appreciated.

Thanks in advance

Categories:

Model context protocol

1. Does Copilot Studio’s MCP connector support OAuth 2.1?

No, OAuth 2.1 is not officially supported yet.
The connector expects OAuth 2.0 flows and may fail if the MCP server enforces OAuth 2.1-specific requirements.
2. Is there a roadmap or timeline for OAuth 2.1 support?

Microsoft has not published a public roadmap or ETA for OAuth 2.1 support in Copilot Studio connectors as of January 2026.
You can track feature requests or submit feedback via the Microsoft Copilot Studio feedback portal.
3. Workarounds for MCP servers requiring OAuth 2.1:

If possible, configure your MCP server to allow OAuth 2.0 compatibility mode for Copilot Studio connections.
Some users have implemented a proxy or middleware that translates OAuth 2.0 requests from Copilot Studio to OAuth 2.1 for the backend service, but this adds complexity and is not officially supported.
If you control the HubSpot app registration, check if you can relax the OAuth requirements to accept 2.0 flows for this integration.