How can I extract list of all members in a teams channel?

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How can I extract list of all members in a teams channel?

Wendelöv, Vandana (Vino) (V.) 0

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2 answers

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Answer 1

Hello @Wendelöv, Vandana (Vino) (V.)

To export the list of members from a Microsoft Teams channel, administrative access is required. Currently, there is no built-in feature that allows a Team owner to directly export channel members, and the Teams Admin Center does not provide an option to export channel membership lists.

As a workaround, the member list can be exported using Microsoft Teams PowerShell and it would require the Microsoft Teams administrator.

Please follow these steps:

Install the Microsoft Teams PowerShell module (if it is not already installed):Install-Module MicrosoftTeams -Scope CurrentUser
Connect to Microsoft Teams:
Connect-MicrosoftTeams
Retrieve the Group ID of the Team by running: Get-Team Alternatively, the Group ID can also be obtained from the Microsoft Entra Admin Center under Groups > All groups.
Export the channel members by running: Get-TeamChannelUser -GroupId "<GroupID>" -DisplayName "<Channel Name>" | Export-Csv "C:\Temp\TeamMembers.csv" -NoTypeInformation
Please replace:
<GroupID> with the Team's Group ID from the previous step.
<Channel Name> with the exact display name of the channel.

The export file path (C:\Temp\TeamMembers.csv) can be changed to any location of your choice.

I hope this information is helpful. Please let me know if you need any assistance with the PowerShell commands or encounter any errors while running them.

Answer 2

Use Microsoft Graph, depending on whether direct members only or all channel members are needed:

Direct members only: GET /teams/{team-id}/channels/{channel-id}/members
- Returns members of standard, private, and shared channels.
- For shared channels, this returns direct members only.
All members: GET /teams/{team-id}/channels/{channel-id}/allMembers
- Returns all members in a channel.
- For shared channels, this includes:
  - Direct members added directly to the channel
  - Indirect members from teams with which the channel is shared

Important details:

A bearer token is required in the Authorization header.
allMembers supports $filter and $select query parameters.
On shared channels, only a user who is a member of the shared channel can retrieve the channel member list from the members API.
Membership IDs must be treated as opaque strings.

Example HTTP request for all members:

GET /teams/{team-id}/channels/{channel-id}/allMembers
Authorization: Bearer {token}

Example full Graph URL:

GET https://graph.microsoft.com/v1.0/teams/2ab9c796-2902-45f8-b712-7c5a63cf41c4/channels/19%3A20bc1df46b1148e9b22539b83bc66809%40thread.skype/allMembers

If using the Microsoft Graph SDK for C#:

var result = await graphClient.Teams["{team-id}"].Channels["{channel-id}"].AllMembers.GetAsync();

Required least-privileged permissions:

Delegated (work or school account): ChannelMember.Read.All
Application: ChannelMember.Read.Group