How to create a teams chat with an external guest using logic apps

Question

I am trying to create a group chat that includes an external guest user using the Teams "Create a chat" logic app connector. I can create the chat if I only use an internal email address but not if I include the guest user. Is there any way to do this?

Answer 1

@Gareth T ,
Welcome to Microsoft Q&A Platform!

Thank you for reaching out. I understand that you're trying to create a group chat in Teams that includes an external guest user using the Logic Apps connector. Unfortunately, the "Create a chat" action in Logic Apps currently does not support adding guest users to a group chat. This is a known limitation.
https://learn.microsoft.com/en-us/connectors/teams/?tabs=text1%2Cdotnet

However, we could try this functionality by leveraging the Microsoft Graph API. The Graph API provides the flexibility to include both internal users and external guests in a Teams group chat, provided the external users are already added as guests to your Azure Active Directory tenant.

To implement this solution:

1. The guest user must first be invited and properly configured in your Azure AD.
2. We can utilize Logic Apps' HTTP action to call the Graph API and programmatically create a group chat, including the external guest.

https://learn.microsoft.com/en-us/graph/api/chat-post?view=graph-rest-1.0&tabs=http

Hope this helps. Do let us know if you any further queries.

---

If this answers your query, do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.

Answer 2

According to documentation, there are known issues and limitations with actions, including the inability to add guest users to group chats using the "Create a chat" action. This limitation means that while you can create group chats with internal users, adding external guest users is not supported through this specific connector.

Thanks, 

Prasad Das

************************************************************************* 

If the response is helpful, please click "Accept Answer" and upvote it. You can share your feedback via Microsoft Teams Developer Feedback link. Click here to escalate.

Answer 3

I have found that it can be done if you use the user id instead of the email address.

So I first get the user profile using their internal email address as the UPN e.g. extrernalemail_gmail.com#ext#@mycompany.onmicrosoft.com. This returns the ID and ID can be used when creating the chat.

Answer 4

@Gareth T ,

I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others" I'll repost your solution in case you'd like to accept the answer.

Issue:

You were trying to create a group chat in Teams that includes an external guest user using the Logic Apps connector. Initially, it seemed that the "Create a chat" action in Logic Apps did not support adding guest users to a group chat.

Solution:

You found that it can be done if you use the user ID instead of the email address. Here’s how you resolved it:

• First, get the user profile using their internal email address as the UPN (e.g., extrernalemail_gmail.com#ext#@mycompany.onmicrosoft.com). This returns the ID.
• Use the returned ID when creating the chat.

If I missed anything, please let me know and I'd be happy to add it to my answer, or feel free to comment below with any additional information.

I hope this helps!

If you have any other questions, please let me know. Thank you again for your time and patience throughout this issue.