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Adding user to a private channel

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Posted on by StefanVestin

Hello, I am trying to add a user to a private teams channel group using the Teams Send a Microsoft Graph HTTP Request action. I've done like the screenshot below. But I get a "forbidden" return. I've read a bit and apparently I need to add Authorization but I have no idea how to make it work.

I tried creating an app with the ChannelMember.ReadWrite.All permission and using a normal HTTP action, which probably would have worked but required PowerAutomate Premium.

Is what I want to do achievable using PowerAutomateFree?

I'm new to Power Automate and still learning. Any guidance is appreciated.

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tom_riha 10,187 Most Valuable Professional on at

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Hello @StefanVestin ,

you don't need any authorization for the available HTTP request actions as they're already authenticated - they're using your connector = delegated permissions. Authorization is needed only when you use the generic HTTP request.

I'd say that if it doesn't work then you (or the account you're using in that action) either don't have enough permissions to add members to that private channel or the action can't do it in which case you'll need a premium license and the generic HTTP request.

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StefanVestin 3 on at

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Thanks for your answer. I'm the owner of both the team and the private channel and I've tested in Graph Explorer to make sure it works there, so okay, it must be the action that can't do this.

Thanks anyways.

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bbald 7 on at

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@StefanVestin - did you ever find a solution? I have been going down the same path - and am now getting the same error. Currently using the 'Send a Graph HTTP Request' connector - but I am recieving the 'Forbidden' message as well...

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mjburley 370 on at

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Something I haven't done for a while but I know the following worked once! Does not mean it still works:
Extract below (note this was taken from a bigger request to create the team at the same time).
"members": [ { "@odata.type": "#microsoft.graph.aadUserConversationMember", "roles": [ "owner" ], "user@odata.bind": "https://graph.microsoft.com/v1.0/users('7b1c736d-1a63-4760-89da-360d22144bb8')" }

For context, this is from part 6 of an old blog post of mine:
Power Automate: Creating Teams, Tabs and Channels – Power Platform Always Learning (illuminocity.com)

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D.Cayanan 71 on at

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Old post, but for those looking for an answer. Once you have Register this App with ChannelMember.ReadWrite.All permission. You will get a Secret Key which will need to use that to generate an Access Token.

With the Access Token, you will need to adjust the header: Authorization: Bearer <YOUR_ACCESS_TOKEN>

Keep in mind that this access token will expire every hour unfortunatly, so you will need a way to constantly generate a new one for it to use.

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