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Find Teams Channels with External Members

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Due to issue in MS Graph PowerShell (Version 2.27.0 or 2.28.0), API call is used to retrieve external membership.
This commit is contained in:
AdminDroid 2025-07-07 15:22:59 +05:30
parent fa8ebd1b58
commit 95a479bf15
1 changed files with 33 additions and 20 deletions
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53
Find Teams Channels with External Users/FindTeamsChannelsWithExternalMembers.ps1
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@ -1,7 +1,7 @@
<#
=============================================================================================
Name: Find All Team Channels with External Members in Microsoft 365
Version: 1.0
Version: 1.1
Website: o365reports.com
Script Highlights:
@ -16,6 +16,12 @@ Script Highlights:
6. It can be executed with certificate-based authentication (CBA) too.
7. The script is schedular-friendly.
Change log:
~~~~~~~~~~~
V1.0 (Feb 04, 2025) – File created.
V1.1 (Jul 07, 2025) – Due to issue in MS Graph PowerShell cmdlet, API call is used to retrieve external membership.
For detailed Script execution: https://o365reports.com/2025/02/04/get-all-teams-channels-with-external-members/
============================================================================================
#>
@ -125,30 +131,37 @@ Get-MgTeam -Filter "$($TeamFilter)" -All | ForEach-Object {
$ExternalMembers = @()
$ExternalUserFound = $false
Write-Progress -Activity "`n Processed Teams count: $ProcessedTeamsCount"`n" Processing Channel: $($ChannelDisplayName) from Team: $($TeamDisplayName)"
#Get-MgTeamChannelMember -All -Team $TeamId -Channel $ChannelId | ForEach-Object {
try {
(Invoke-MgGraphRequest -Method GET -Uri "/v1.0/teams/$($TeamId)/channels/$($ChannelId)/members" -ErrorAction Stop).value | ForEach-Object {
$ExternalMemberTenantId = $_.tenantId
if (($ExternalMemberTenantId -ne $TenantId) -or ($_.roles -contains "guest")) {
$ExternalMemberName = $_.displayName
$ExternalMemberEmail = $_.email
$ExternalMemberGuid = $_.userId
Get-MgTeamChannelMember -All -Team $TeamId -Channel $ChannelId | ForEach-Object {
$ExternalMemberTenantId = $_.AdditionalProperties["tenantId"]
if (($ExternalMemberTenantId -ne $TenantId) -or ($_.Roles -contains "guest")){
$ExternalMemberName = $_.DisplayName
$ExternalMemberEmail = $_.AdditionalProperties["email"]
$ExternalMemberGuid = $_.AdditionalProperties["userId"]
if (($MembershipType -notin @("standard","private"))) { $MembershipType = "shared" }
if (($MembershipType -notin @("standard","private"))) { $MembershipType = "shared" }
# Apply filters based on params
if (!([string]::IsNullOrEmpty($MemberUPN)) -and ($MemberUPN -ne $ExternalMemberEmail)) { return }
if (!([string]::IsNullOrEmpty($ChannelType)) -and ($ChannelType -ne $MembershipType)) { return }
# Apply filters based on params
if (!([string]::IsNullOrEmpty($MemberUPN)) -and ($MemberUPN -ne $ExternalMemberEmail)) { return }
if (!([string]::IsNullOrEmpty($ChannelType)) -and ($ChannelType -ne $MembershipType)) { return }
$ExternalUserFound = $true
$ExternalMembersCount++
$ExternalMembers += $ExternalMemberEmail
Print_DetailedReportContent
$ExternalUserFound = $true
$ExternalMembersCount++
$ExternalMembers += $ExternalMemberEmail
Print_DetailedReportContent
}
}
if ($ExternalUserFound) {
$ExternalMembers = $ExternalMembers -join ", "
$TeamsChannelsWithExternalMembersCount++
Print_SummaryReportContent
}
}
if ($ExternalUserFound) {
$ExternalMembers = $ExternalMembers -join ", "
$TeamsChannelsWithExternalMembersCount++
Print_SummaryReportContent
catch {
Write-Host "Error occurred while fetching members for Channel: $($ChannelDisplayName) in Team: $($TeamDisplayName)."
}
}
}