Description
Hi,
The cmdlets below have been throwing errors when targeting private channels with cmdlet "Get-MgTeamChannelMember", while they still work as expected with standard channels and shared channels
The issue appears with Microsoft Graph PowerShell SDK version 2.27.0 and also persists in the latest version 2.28.0. But no issue with version 2.26.1.
Expected behavior
Cmdlets should work for both standard and private channels as long as the required Microsoft Graph permissions are granted, regardless of the SDK version (2.27.0 or 2.28.0).
How to reproduce
Connect-MgGraph -ClientId $clientId -TenantId $tenantId -CertificateThumbprint $certificateThumbprint -ErrorAction:Stop
Get-MgTeamChannelMember -TeamId $TID -ChannelId $CIDSDK Version
2.27.0 and 2.28.0
Latest version known to work for scenario above?
2.26.1
Known Workarounds
Invoke-MgGraphRequest -Method GET -Uri "https://graph.microsoft.com/v1.0/teams/00000000000000/channels/19:[email protected]/members"Debug output
Click to expand log
PS C:\Users\kollyj01> Get-MgTeamChannelMember -TeamId 0000000000000000000 -ChannelId 19:[email protected] -debug
DEBUG: [CmdletBeginProcessing]: - Get-MgTeamChannelMember begin processing with parameterSet 'List'.
DEBUG: [Authentication]: - AuthType: 'AppOnly', TokenCredentialType: 'ClientCertificate', ContextScope: 'Process', AppName: 'XXX-PortailM365-ResourcesManagement'.
DEBUG: [Authentication]: - Scopes: [TeamSettings.ReadWrite.All, Channel.Delete.All, BookingsAppointment.ReadWrite.All, AppCatalog.ReadWrite.All, ServiceMessage.Read.All, Group.ReadWrite.All, Bookings.Read.All, Directory.Read.All, ConsentRequest.Read.All, Calendars.ReadBasic.All, TeamMember.ReadWrite.All, ChannelMember.ReadWrite.All, Tasks.ReadWrite.All, ChannelSettings.ReadWrite.All, AuditLog.Read.All, ServiceHealth.Read.All, Sites.FullControl.All].
DEBUG: ============================ HTTP REQUEST ============================
HTTP Method:
GET
Headers:
FeatureFlag : 00000003
Cache-Control : no-store, no-cache
User-Agent : Mozilla/5.0,(Windows NT 10.0; Microsoft Windows 10.0.22631; fr-CH),PowerShell/7.4.7
SdkVersion : graph-powershell/2.28.0
client-request-id : 4badb989-d8a0-4f49-be24-cf305d3ea94f
Accept-Encoding : gzip,deflate,br
Body:
DEBUG: ============================ HTTP RESPONSE ============================
Status Code:
Forbidden
Headers:
Vary : Accept-Encoding
Strict-Transport-Security : max-age=31536000
request-id : f1160899-8244-4c2f-b20e-8ad94815197e
client-request-id : 4badb989-d8a0-4f49-be24-cf305d3ea94f
x-ms-ags-diagnostic : {"ServerInfo":{"DataCenter":"Switzerland North","Slice":"E","Ring":"3","ScaleUnit":"002","RoleInstance":"ZR2PEPF000000C7"}}
Date : Tue, 13 May 2025 10:55:13 GMT
Body:
{
"error": {
"code": "Forbidden",
"message": "Failed to execute GetThreadRosterAsync.",
"innerError": {
"code": "Unknown",
"message": "Failed to execute GetThreadRosterAsync.",
"date": "2025-05-13T10:55:13",
"request-id": "f1160899-8244-4c2f-b20e-8ad94815197e",
"client-request-id": "4badb989-d8a0-4f49-be24-cf305d3ea94f"
}
}
}
Get-MgTeamChannelMember_List: Failed to execute GetThreadRosterAsync.
Status: 403 (Forbidden)
ErrorCode: Forbidden
Date: 2025-05-13T10:55:13
Headers:
Vary : Accept-Encoding
Strict-Transport-Security : max-age=31536000
request-id : f1160899-8244-4c2f-b20e-8ad94815197e
client-request-id : 4badb989-d8a0-4f49-be24-cf305d3ea94f
x-ms-ags-diagnostic : {"ServerInfo":{"DataCenter":"Switzerland North","Slice":"E","Ring":"3","ScaleUnit":"002","RoleInstance":"ZR2PEPF000000C7"}}
Date : Tue, 13 May 2025 10:55:13 GMT
DEBUG: [CmdletEndProcessing]: - Get-MgTeamChannelMember end processing.
Configuration
PSVersion 7.4.7
PSEdition Core
GitCommitId 7.4.7
OS Microsoft Windows 10.0.22631
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0
Other information
No response