Microsoft Teams

PowerShell script to silently install the new Microsoft Teams client machine wide.

Overview

This script downloads and installs the latest Microsoft Teams (New) machine wide. If the Teams (Classic) Machine-Wide installer is present, it will be uninstalled. With its removal, Teams (Classic) will also be removed from all user profiles on their next login.

Bulk deploy the new Microsoft Teams desktop client - Microsoft TeamsMicrosoftLearn

Prerequisites: None

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Script

Note: This script will attempt to remove Teams (Classic) versions if they were deployed with the machine-wide installer package.

https://github.com/wise-io/scripts/blob/main/scripts/InstallTeams.ps1

<#
  .SYNOPSIS
    Installs Microsoft Teams
  .DESCRIPTION
    Installs the new Microsoft Teams client machine wide
  .PARAMETER Force
    Switch parameter - attempts install even if existing installation is detected
  .LINK
    https://learn.microsoft.com/en-us/microsoftteams/new-teams-bulk-install-client
  .NOTES
    Author: Aaron J. Stevenson
#>

param([Switch]$Force)

function Install-NewTeams {
  function Set-MsixURL {
    # Define urls
    $x86Url = 'https://go.microsoft.com/fwlink/?linkid=2196060'
    $x64Url = 'https://go.microsoft.com/fwlink/?linkid=2196106'
    $Arm64Url = 'https://go.microsoft.com/fwlink/?linkid=2196207'
  
    # Get machine architecture
    if ($null -ne $ENV:PROCESSOR_ARCHITEW6432) { $Architecture = $ENV:PROCESSOR_ARCHITEW6432 }
    else {     
      if ((Get-CimInstance -ClassName CIM_OperatingSystem -ErrorAction Ignore).OSArchitecture -like 'ARM*') {
        if ( [Environment]::Is64BitOperatingSystem ) { $Architecture = 'arm64' }  
        else { $Architecture = 'arm' }
      }
      if ($null -eq $Architecture) { $Architecture = $ENV:PROCESSOR_ARCHITECTURE }
    }
  
    # Return correct url
    switch ($Architecture.ToLowerInvariant()) {
      { ($_ -eq 'amd64') -or ($_ -eq 'x64') } { return $x64Url }
      { $_ -eq 'x86' } { return $x86Url }
      { $_ -eq 'arm64' } { return $Arm64Url }
      default { throw "Architecture '$Architecture' not supported." }
    }
  }
  
  # Set bootstrapper url / msix download urls
  $BootstrapperURL = 'https://go.microsoft.com/fwlink/?linkid=2243204'
  $MsixURL = Set-MsixURL

  # Set file paths
  $Bootstrapper = Join-Path -Path $env:TEMP -ChildPath 'teamsbootstrapper.exe'
  $TeamsMsix = Join-Path -Path $env:TEMP -ChildPath 'MSTeams.msix'

  # Check for existing installation
  $Installed = Get-AppxPackage 'MSTeams' -AllUsers
  if ($Installed -and -not $Force) {
    Write-Output "`nMicrosoft Teams [$($Installed.Version)] detected"
    Write-Output 'Download / Installation not needed'
  }
  else {
    try {
      # Download files
      Write-Output "`nDownloading Teams Bootstrapper and MSIX files..."
      Invoke-WebRequest -Uri $BootstrapperURL -OutFile $Bootstrapper
      Invoke-WebRequest -Uri $MsixURL -OutFile $TeamsMsix

      # Install Teams
      Write-Output 'Installing...'
      Start-Process -NoNewWindow -Wait -FilePath $Bootstrapper -ArgumentList "-p -o $TeamsMsix"
      
      # Output installed version
      $Installed = Get-AppxPackage 'MSTeams' -AllUsers
      if ($Installed) { Write-Output "Microsoft Teams [$($Installed.Version)] installed" }
    }
    catch {
      Write-Warning 'Unable to install Microsoft Teams.'
      Write-Warning $_
    }
    finally { Remove-Item $Bootstrapper, $TeamsMsix -Force -ErrorAction Ignore }
  }
}

# Set PowerShell preferences
Set-Location -Path $env:SystemRoot
$ProgressPreference = 'SilentlyContinue'
$ErrorActionPreference = 'Stop'
if ([Net.ServicePointManager]::SecurityProtocol -notcontains 'Tls12' -and [Net.ServicePointManager]::SecurityProtocol -notcontains 'Tls13') {
  [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
}

# Install Teams
Install-NewTeams

# Remove Teams Classic Machine-Wide installer
$TeamsMachineWide = Get-Package -Name 'Teams Machine-Wide Installer' -ErrorAction Ignore
if ($TeamsMachineWide) { 
  Write-Output "`nTeams (Classic) machine-wide installer detected"
  Write-Output 'Attempting removal...'
  $TeamsMachineWide | Uninstall-Package | Out-Null
  $Installed = Get-Package -Name 'Teams Machine-Wide Installer' -ErrorAction Ignore
  if ($Installed) { Write-Warning 'Removal failed' }
  else { Write-Output 'Success' }
}

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Parameters

-Force

Optional switch parameter - attempts install even if an existing installation is detected.