Conversations involving multiple participants, allowing collaboration and information sharing in Teams
Dear @Suttorp
I understand you’d like the person you’re adding to see the previous messages. Teams offers the option to include history when adding someone to an existing group chat, but not a one-to-one chat. Adding a third person to a one-to-one conversation creates a new group chat without the original conversation’s history.
For an existing group chat, I recommend these steps in Teams on desktop or the web:
- Open the group chat.
- Select View and add participants > Add people at the top.
- Enter the person’s name, choose how much chat history to include, and select Add.
If the option is missing in an existing group chat, try the same steps at Teams on the web to check whether the issue is specific to your app.
Could you confirm whether you’re adding someone to a one-to-one conversation or an existing group chat, and whether you’re using desktop, web, or mobile?
Reference: Chat with others in Microsoft Teams.