Agent no longer visible in MS 365 Copilot

Question

Issue: I’m reaching out for urgent support with a critical issue impacting one of my Microsoft Copilot agents. I noticed on Saturday that one of my agents was no longer visible in my Copilot left panel, nor in the “Other Agents” section. It appears that the agent has been completely overwritten or replaced. All prior knowledge sources and uploaded documents are missing The name, instructions, and configuration have been altered. I am unable to locate any prior version or restore point. This agent supports a critical function, so the loss of its configuration and knowledge base is a significant operational and risk concern.

Request: Can someone please help determine what happened during the update process? Is there a way to restore a prior version of the agent (including knowledge files and instructions)? If not, can logs or version history be accessed to help recover the original setup? I would greatly appreciate expedited support given the criticality of this use case.

ALTERNATIVELY, as a workaround (although not preferred) how can I move a copy I had in MS Copilot Studio to MS 365 Copilot? And I stress this is not ideal as the copy I had in Copilot Studio is from about a month ago.

Answer 1

Hello Blanco, Susana ,
The issue is likely caused either by a governance/visibility change (agent no longer assigned or visible in M365 Copilot) or an overwrite during publishing, as Copilot Studio currently has no rollback or version restore capability. Recovery options are limited—check admin logs and agent catalog to confirm if it still exists, attempt to recover knowledge sources if stored in Dataverse, or rebuild/redeploy using a backup (e.g., Copilot Studio copy).
As a workaround, you can republish your older Copilot Studio agent to Microsoft 365 Copilot via the Channels feature, though it won’t include recent changes.

If you have a Copilot Studio copy (even a month old), the supported path is:
A. Microsoft confirms publishing from Copilot Studio to M365 Copilot is GA and is done via the agent’s Channels experience (Teams/M365).

High-level flow:

1. Open the agent in Copilot Studio
2. Go to Channels
3. Choose Microsoft 365 Copilot (or “Teams + Microsoft 365” depending on your UI)
4. Submit/publish

B. Microsoft describes that admins can then review/approve/manage the agent in the Microsoft 365 admin center / Teams admin center.
The publishing model includes governance: admins review and approve, and the agent appears in the Agent Store/catalog for users to add/pin.

If your agent doesn’t show up, it’s often because it’s:

• not yet approved
• not assigned to you/a group
• not enabled via the relevant admin policies

Reference Document-
1.https://learn.microsoft.com/en-us/microsoft-365/copilot/agent-essentials/m365-agents-admin-guide
2.https://www.microsoft.com/en-us/microsoft-copilot/blog/copilot-studio/publish-your-microsoft-copilot-studio-agents-to-microsoft-365-copilot/
3.https://learn.microsoft.com/en-us/microsoft-copilot-studio/knowledge-edit-source
4.https://www.microsoft.com/en-us/microsoft-copilot/blog/copilot-studio/publish-your-microsoft-copilot-studio-agents-to-microsoft-365-copilot/