It's possible to deploy a custom agent to outlook

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Posted on by Subra

I have created a custom agent from Copilot Studio and published the same to Teams and M365. The agent is available in teams and M365 as well.

It's possible to add the same agent to outlook app copilot sidecar as well?

If yes, please let me know how we can achieve that?

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Model context protocol

Publish & channel management

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Arild Aarnes 551 Super User 2026 Season 1 on at

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Hi @Subra,

You can find your agent via the + sign in Copilot in Outlook. Under All Agents.

Or you can @ mention your agent in a chat in the Copilot panel.

Regards,

Arild

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Haque 3,096 on at

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Hi @Subra

Here are the steps using which you can add the same custom agent you created in Copilot Studio to the Outlook app Copilot sidecar, but it requires specific steps to enable that channel.

Publish your custom agent from Copilot Studio to Microsoft 365 Copilot.

Use the Microsoft 365 admin center Copilot Control System to approve and assign the agent to users or groups.

Once assigned, the agent becomes available in supported Microsoft 365 Copilot experiences, including the Outlook app Copilot sidecar (as shown by Arild Aarnes).

I am sure some clues I tried to give. If these clues help to resolve the issue brought you by here, please don't forget to check the box Does this answer your question? At the same time, I am pretty sure you have liked the response!

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Pallavi Phade 22 on at

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Namaste @Subra

You can publish agent in M365 chat

Warm Regards

Pallavi Phade

www.linkedin.com/in/pallaviphade131116

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Subra 13 on at

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Hi @Arild Aarnes @Haque

Thanks for your insights!

I have done all this activity and still I can't find the agent outlook copilot sidecar.

Kidnly let me know is there anything I have missed from my side or let me know how to troubleshoot the same.

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Haque 3,096 on at

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Hi @Subra,

I am suspecting something if Microsoft 365 Copilot in Outlook supports only built-in and declarative (Copilot-native) agents. Custom agents created and published via Copilot Studio—even if they appear and work in Teams, Microsoft 365 Copilot app, or other Microsoft 365 apps— probably do not yet appear or function in the Outlook Copilot sidecar.

This is somethin,g probably the Outlook Copilot experience is currently restricted to Microsoft-provided agents and declarative agents built with Agent Builder or native extensibility frameworks.

[What kinds of agents are available for Microsoft 365?]

https://learn.microsoft.com/en-us/microsoft-365/copilot/agent-essentials/m365-agents-faq

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Subra 13 on at

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Hi @Haque

I can see the agents now in outlook sidecar when I click that somethhing went wrong error is coming in screen.

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Subra 13 on at

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Hi Haque,

When we try to add a channel from Co-pilot studio, I can see the below one and it's indicating it's should be availble in Outlook as well.

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