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"Peut-on savoir si des externes ont accès aux sites Teams ? Et si oui lesquels ?" est une question qui revient souvent quand on parle droits d'accès et O365.

Pour le savoir rien de plus simple, Powershell et de la patience.

#Connect-MicrosoftTeams
Connect-MicrosoftTeams

# Define Variables
$ArrayTeamsMembers = @()
$AllTeams = Get-Team

$AllTeams | foreach {
    $GroupId = $_.GroupId
    $DisplayName = $_.DisplayName
    $Visibility = $_.Visibility
    $Archived = $_.Archived
    $MailNickName = $_.MailNickName
    $Description = $_.Description

    # Search External members
    $Members = Get-TeamUser -GroupId $GroupId 
    $External = $Members.where({$_.Role -eq "Guest"})

    If ($External.count -ne 0) {
        Write-Host "External User(s) are present in $DisplayName" -ForegroundColor Green
        $External.count
        $External | foreach {
            $UserId = $_.UserId
            $User = $_.User

            $ArrayTeamsMembers += New-Object psobject -Property @{
                GroupId = $GroupId
                DisplayName = $DisplayName
                Visibility = $Visibility
                Archived = $Archived
                MailNickName = $MailNickName
                Description = $Description
                UserId = $UserId
                User = $User
                }
            $UserId = $null
            $User = $null
            }
        }

    $GroupId = $null
    $DisplayName = $null
    $Visibility = $null
    $Archived = $null
    $MailNickName = $null
    $Description = $null
    $Members = $null
    $External = $null
    }

$ArrayTeamsMembers | Export-Csv c:\temp\ExternalTeamsMembers.csv -Encoding UTF8 -Delimiter ";" -NoTypeInformation

Avez vous déjà essayé d'exporter les numéros de Téléphone Teams depuis le portail d'administration ? Je vous en prie faites l'essai... Frustrant non ?

Voici comment exporter les numéros Teams dans un fichier CSV via Powershell

# Variables Definition
$Array = @()
$Csv = "C:\temp\TeamsNumbers.csv"

# Skype Online Connection
Import-Module SkypeOnlineConnector
$sessionCS = New-CsOnlineSession -OverrideAdminDomain assystem.com
Import-PSSession $sessionCS

# Azure AD Connection
Connect-AzureAD

# Collect All Voice User
$AllVoiceUsers = Get-CsOnlineVoiceUser

# Collect Data and store them in array
$AllVoiceUsers | foreach {
    $Name = $_.Name
    $Id = $_.Id
    $SipDomain = $_.SipDomain
    $Number = $_.Number
    $LicenseState = $_.LicenseState
    $UsageLocation = $_.UsageLocation
    $EnterpriseVoiceEnabled = $_.EnterpriseVoiceEnabled

    $CurrentUser = Get-AzureADUser -ObjectId $Id
    $Mail = $CurrentUser.Mail
    $Upn = $CurrentUser.UserPrincipalName

    $Array += New-Object psobject -Property @{
        Name = $Name
        Id = $Id
        SipDomain = $SipDomain
        Number = $Number
        LicenseState = $LicenseState
        UsageLocation = $UsageLocation
        EnterpriseVoiceEnabled = $EnterpriseVoiceEnabled
        Mail = $Mail
        Upn = $Upn     
        }
    $Name = $null
    $Id = $null
    $SipDomain = $null
    $Number = $null
    $LicenseState = $null
    $UsageLocation = $null
    $EnterpriseVoiceEnabled = $null
$CurrentUser = $null
    $Mail = $null
    $Upn = $null
    }

# Export Data
$Array | Export-Csv $Csv -Delimiter ";" -Encoding UTF8 -NoTypeInformation