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List all team members in Microsoft Teams teams in the tenant

List all team members in Microsoft Teams teams in the tenant and exports the results in a CSV.

function Get-TeamMembers(
[Parameter(Mandatory = $false)][string] $teamID
) {
if (!$teamID) {
Write-Error "'Team ID' is required!"
return
}
Write-Host "Retrieving the users.."
$results = @()
$users = m365 teams user list --teamId $teamID -o 'json' | ConvertFrom-Json
if ($users.length -gt 0) {
foreach ($user in $users) {
$results += [pscustomobject][ordered]@{
ID = $user.id
"Display Name" = $user.displayName
UPN = $user.userPrincipalName
Role = $user.userType
}
}
}
else {
Write-Output "No team members!"
}
Write-Host "Exporting the results.."
$results | Export-Csv -Path "TeamMembers.csv" -NoTypeInformation
Write-Host "Completed."
}

Write-Host "Ensure logged in"
$m365Status = m365 status --output text
if ($m365Status -eq "Logged Out") {
Write-Host "Logging in the User!"
m365 login --authType browser
}
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