Created an Agent on Copilot chat (Agent Builder) and assigned a new owner to it. However, the new owner doesn't see it

Ok nvm, we found it.

I didn't show under 'Agents' section in Copilot chat page. We had to go to 'New agent' -> click 'Agent Builder' at the top-left corner

Reassigning ownership in the Microsoft 365 admin center changes who owns and can manage the shared agent, but it does not automatically make the agent visible in Copilot Chat for the new owner unless:

1. The agent is a shared agent that is actually deployed/available to that user, and
2. The new owner has a valid Copilot license.

From the documented behavior:

• Admins can reassign ownership of shared agents in the Agent Registry. After reassignment:
  • The new owner gets full edit and delete permissions and access to files the previous owner uploaded.
  • The previous owner loses all access, including read rights.
• Microsoft 365 Copilot does not support transferring ownership of declarative agents directly in Agent Builder; ownership updates are an admin operation and are scoped to shared agents.

To resolve the scenario:

1. Confirm the agent type and sharing status
   • Ensure the agent created by user A was actually shared (published/approved and visible as a shared agent), not just a personal draft in Agent Builder. Only shared agents appear in the admin Agent Registry and support ownership reassignment.
2. Verify the new owner’s license
   • In the admin center, confirm user B has a Copilot license. The Agent Registry explicitly allows reassignment only to users with a Copilot license.
3. Check agent availability and deployment
   • In Microsoft 365 admin center, go to Agents → All agents (or Integrated apps → agents list) and verify:
     • The agent is enabled and not blocked.
     • The agent is available to user B (assigned or not restricted by availability settings).
   • If the agent is set to No users or restricted to a group that does not include user B, adjust availability so user B can access it.
4. Allow for propagation
   • After changing ownership and availability, allow some time for changes to propagate, then have user B reopen Copilot Chat (not just refresh a single tab) and check the Agents list again.

If, after confirming it is a shared agent, that user B has a Copilot license, and that the agent is deployed/available to user B, the agent still does not appear, the next step is to review the agent inventory and lifecycle in the admin center and, if needed, re-publish or re-share the agent so it is clearly in the shared inventory rather than only as a personal agent.

References:

• Agent Registry in the Microsoft 365 admin center
• Share and manage agents
• Agents admin guide for Microsoft 365
• Manage agents in the Microsoft 365 admin center
• Agent Builder in Microsoft 365 Copilot
• Using agents in Microsoft 365 Copilot Chat
• Microsoft 365 Copilot Agent usage report - Microsoft 365 admin center