Connect Multiple Teams Accounts to ChatGPT Work
Carly is how one ChatGPT Work run reaches two Microsoft Teams tenants. The Teams app signs in a single Microsoft work identity, and on this product the walls around it are administrative rather than technical: two consent gates sit in front of the first tenant, a third setting can refuse a second one outright, and all three live in a console rather than in the connect dialog. Connect each organization to Carly, add Carly to ChatGPT Work once, and a single run works in whichever tenant you name. Carly holds your Gmail and Outlook mailboxes and every calendar on both sides in the same place.
1. Add your Microsoft Teams accounts to Carly
- Sign in at carlyassistant.com.
- Open carlyassistant.com/integrations.
- Find Microsoft Teams, click Connect, and authorize the account.
- Click Connect again for the next one, and keep going for as many accounts as you want.
Carly authorizes per identity, so two organizations sit side by side as named connections.
Microsoft may reuse whichever session your browser already holds, so sign out between accounts or use a separate browser profile.
Carly connects to thousands of apps, so while you are on that page you can add your inboxes, calendars, CRM, and anything else you want ChatGPT Work to reach through the same connector.
2. Add Carly to ChatGPT Work
- Open Plugins in the ChatGPT sidebar.
- Click +.
- Paste
https://carlyassistant.com/mcp/. - Continue to authorization.
- Sign in to the Carly account holding the Teams connections.
- Make Carly available to the run.
Since July 9, 2026 apps ship inside "plugins," listed in one directory spanning ChatGPT and Codex. Existing connections kept working and nothing needed resubmitting. What changed is the packaging and the storefront, not the protocol.
If + is greyed out on a Business or Enterprise workspace, the ChatGPT administrator may need to enable the plugin first.
What one chat can do afterwards
- Search two organizations’ channels in the same question.
- Compare a client thread against the internal one it came from.
- Post a message or reply in the tenant you name.
- Produce one briefing grouped by organization.
- File Planner tasks into the right tenant’s plan.
- Act the moment an escalation lands rather than when you next open a chat.
Nothing is merged. Each tenant keeps its own credentials, and Carly keeps every organization individually addressable.
Why the second tenant has nowhere to go
The app signs in one Microsoft account, and “message results are limited to chats and channels the signed-in user can access.”
| Account | Type | Reachable natively? |
|---|---|---|
[your-work-address] | Work, your tenant | Yes, once your Entra admin approves |
[your-second-work-address] | Work, client tenant | Not alongside the first |
| A guest account in a client tenant | Guest | Bounded by that identity, and by that tenant’s consent |
[your-personal-address] | Personal Microsoft | No personal Teams path is documented |
OpenAI also warns that the two consent roles are usually two people: “A ChatGPT workspace owner or admin and a Microsoft Entra administrator may be different people, so coordinate with the person who can grant organization-wide consent.”
What the Teams app does well, and where it stops next
Inside the one tenant it holds, the app is strong, and worth stating precisely because plenty of write-ups still describe it as search-only:
- Read: “Search and read messages from 1:1 chats, group chats, and channels the signed-in user can access.”
- Write: “Create chats and channels, and send messages and replies when actions are enabled.”
- Planner: work with Microsoft Planner plans and tasks.
- Meetings, Enterprise only: resolve scheduled Teams meetings and retrieve transcript metadata, transcript text, and recording metadata, “when the signed-in user is authorized to access the meeting.”
The meetings row belongs to this page rather than the consumer one, and it comes with a limit stated in the same breath: “recording actions return recording metadata, not the recording file contents.” So Enterprise can read what was said in a meeting, and cannot fetch the recording itself.
What breaks next is the unattended run.
ChatGPT added event triggers for Gmail, Slack and GitHub, and the plumbing underneath is turning out to be the hard part. An open thread on OpenAI's own developer forum documents Gmail and Drive showing as authorized in Settings while conversations report them unavailable at runtime, logged on 28 August and 1 September 2026 with no public fix. Claude's Cowork tasks do not fire on events at all. Carly watches thousands of apps and names the account it acted on.
A workspace agent runs when you start it or when a schedule starts it. An @mention landing in a client channel starts nothing, and neither does an escalation posted at 5:40pm on a Friday. The new write actions let ChatGPT post during a conversation you are driving; they do not make anything watch a channel. Carly runs on the event, so the escalation gets triaged, the thread gets an answer, and the customer hears back before anyone has opened Teams.
ChatGPT Work versus Carly on Teams
| Need | ChatGPT Work | Carly |
|---|---|---|
| Search and summarize one tenant’s Teams | Yes | Yes |
| Post a message or reply | Yes, when actions are enabled | Yes |
| Read meeting transcript text | Enterprise only | Yes |
| Connect without organization-wide Entra consent | No | Yes |
| Hold two tenants at once | No | Yes |
| Survive a Manage domains restriction | No | Yes |
| Name which organization an instruction means | No | Yes |
| Act when a message arrives | No Teams trigger | Yes, on any trigger |
Free Zapier-style workflows; AI agents from $35/month. Connect the tenants on the integrations page, then add Carly to ChatGPT Work and start with Microsoft Teams.
Quick fixes
| Problem | Fix |
|---|---|
| Connecting returns an error | Entra scopes have probably not been approved organization-wide. Coordinate with the Entra administrator, who may not be your ChatGPT admin |
| Reading works, posting does not | Action control is set to read actions only. Widen it in Workspace settings, then Apps, and reconnect the app |
| A client identity is refused | Check Manage domains. Your own workspace may permit only approved email domains for this app |
| Transcripts return nothing | Meeting capabilities are Enterprise only, need a transcript to exist, and return recording metadata rather than the recording file |
| A second tenant has nowhere to go | Authorize each identity in Carly and name the tenant in every instruction |
| Carly is connected but never used | Make the plugin available to the current run |
| Nothing happens when someone @mentions you | Workspace agents start on a clock or on your command. There is no Teams event trigger |
Frequently asked questions
Can ChatGPT Work connect two Microsoft Teams tenants?
No. The Teams app signs in one Microsoft work identity, and results are limited to what that identity can access. Reaching a second tenant needs that organization’s own Entra administrator to grant organization-wide consent to OpenAI’s application for your workspace. Connect each tenant to Carly and add Carly to ChatGPT Work once instead.
Can ChatGPT Work post in Teams?
Yes, when actions are enabled. The app creates chats and channels and sends messages and replies. Entra approval alone does not switch this on; a workspace admin also has to allow write actions in Action control, and members may need to reconnect afterwards.
Why was my Teams connection refused when Entra approval went through?
Most often Manage domains. Business and Enterprise admins can restrict which email domains members use to connect the Teams app, and a client address outside the approved set is refused before Microsoft is involved.
Does ChatGPT Work read Teams meeting recordings?
Not the recordings. On Enterprise it resolves scheduled meetings and retrieves transcript metadata, transcript text and recording metadata. Recording actions return metadata rather than the recording file contents, and transcript text needs a transcript to exist.
Can a workspace agent watch a Teams channel?
No. Workspace agents start when you start them or when a schedule starts them. Nothing subscribes to a Teams message, an @mention or a channel post.
Related: Multiple Teams accounts in ChatGPT · Multiple SharePoint sites in ChatGPT Work · Multiple OneDrive accounts in ChatGPT Work · ChatGPT and Microsoft Teams · Best AI assistants for Microsoft Teams · Microsoft Teams integration
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