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How to create a Teams Workflow to update a Channel Post to be a Cross-Post

David Page 0 Reputation points
2025-09-16T22:13:18.0033333+00:00

My team works as a part of a small group of teams who all have their own Team/Channel structure. I'd like to set up a general messaging location for people to put Posts that will appear in these other areas as Cross-Posts. While I can see a way that an individual would be able to do this by changing their Post to a Cross-Post, I'd really like that to happen automatically. Is there a way to set this as a default, or possibly a way to do this with a workflow?

eg. a structure that looks like this:

Team Channel
Company-Wide Team Questions for Service Teams
Service Team 1 Cross-Team Questions
Service Team 2 Cross-Team Questions

When someone makes a new post in the Company-Wide Question section, I'd like the workflow to update the setting of where that post was supposed to go from just the Company-Wide Team/Channel to be --

Company-Wide Team/Channel
Service Team 1 Team/Channel
Service Team 2 Team/Channel

Is there any way to accomplish that with the Workflow tools? Or is there a default setting that I'm missing somewhere in here?

Microsoft Teams | Microsoft Teams for business | Teams and channels | Manage a team or channel
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  1. Shabana Sohail 331 Reputation points
    2026-06-08T09:22:55.2166667+00:00

    Microsoft Teams does not currently support automatically making every new channel post a cross-post by default, and Power Automate/Teams Workflows cannot change a post into a cross-post after it has been created. Cross-posting is a user action that must be selected when creating the message. As a workaround, you could use a Power Automate flow to detect a new message in the Company-Wide channel and then create separate copies of that message in each Service Team channel, but these would be independent posts rather than true cross-posts (replies and conversation threads would not stay synchronized). If maintaining a single discussion thread across teams is important, users will need to create the post as a cross-post manually; otherwise, automated message duplication is the closest available solution.

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