As a follow up to my last article regarding Microsoft Teams NEW Addin missing in Outlook https://www.ajni.it/2024/03/microsoft-teams-lightweight-teams-meeting-addin-in-outlook-missing/, this script might help you if there are still some issues especially on Terminal Services/RDS 2019/2022.

This script registers Microsoft.Teams.Addin.Loader.dll as the current user, so it has to run at logon.

if (-not ($NewTeamsPackageVersion = (Get-AppxPackage -Name MSTeams).Version)) {
Write-Host "New Teams Package not found. Please install new Teams from https://aka.ms/GetTeams ."
exit 1
}
Write-Host "Found new Teams Version: $NewTeamsPackageVersion"

$TMAPath = "{0}\WINDOWSAPPS\MSTEAMS_{1}_X64__8WEKYB3D8BBWE\MICROSOFTTEAMSMEETINGADDININSTALLER.MSI" -f $env:programfiles,$NewTeamsPackageVersion
if (-not ($TMAVersion = (Get-AppLockerFileInformation -Path $TMAPath | Select-Object -ExpandProperty Publisher).BinaryVersion))
{
Write-Host "Teams Meeting Addin not found in $TMAPath."
exit 1
}
Write-Host "Found Teams Meeting Addin Version: $TMAVersion"

$TMAParam= '/s /n /i:user "C:\Program Files (x86)\Microsoft\TeamsMeetingAddin{0}\x86\Microsoft.Teams.AddinLoader.dll"' -f $TMAVersion
Start-Process "C:\windows\System32\regsvr32.exe" -ArgumentList $TMAParam

A follow-up on the last post here is another way to run msiexec through PowerShell.

For example, here is how you can install OCS inventory agent with some parameters. OCS is an open source inventarization system.

Start-Process -FilePath .\OCS-Windows-Agent-Setup-x64.exe -ArgumentList ‘/S /NOSPLASH /NOW /SERVER=https://inventory.ajni.it//ocsinventory /TAG=”a” /SSL=0’

References:

https://www.ajni.it/2024/04/run-msiexec-transforms-with-powershell/

It might be tricky to run msiexec mst files with PowerShell, because of the arguments that contain special characters. Here is a quick line that you might need next time you install programs with msiexec and PowerShell:

Start-Process -Wait “msiexec.exe” -ArgumentList ‘/i “path-to.msi” TRANSFORMS=”path-to-file.mst” /passive /norestart’

With the newer versions of Outlook 365, when creating a new invitation, a Teams Call link is automatically added to every meeting, which might not be wanted by some customers. Here is a quick way to disable it for the whole tenant:

Connect-ExchangeOnline

Set-OrganizationConfig -OnlineMeetingsByDefaultEnabled $false

To check out if the settings has changed:

Get-OrganizationConfig | select OnlineMeetingsByDefaultEnabled

Microsoft Teams NEW can now be installed on Server 2019. Server 2016 is unfortunately not supported.

Firstly, enable these GPOs:

Computer Configuration > Administrative Settings > Windows Components > App Package Deployment:

• Allows development of Windows Store apps
• Allo all trusted apps to install

Download the MSIX Package: https://go.microsoft.com/fwlink/?linkid=2196106

Install Package:

Dism /Online /Add-ProvisionedAppxPackage /PackagePath:”C:\temp\MSTeams-x64.msix“ /SkipLicense

Tip: If you are having issues adding the MSIX Package, try removing the package first:

Get-AppxPackage -AllUsers -Name MSTeams | Remove-AppxPackage -AllUsers

Install MS Edge Webview2, which is also needed:

Evergreen Standalone x64: https://developer.microsoft.com/de-de/microsoft-edge/webview2/?form=MA13LH#download

To install Meeting Addin for Outlook check out https://www.ajni.it/2024/03/microsoft-teams-lightweight-teams-meeting-addin-in-outlook-missing/

References:

https://learn.microsoft.com/en-us/microsoftteams/new-teams-vdi-requirements-deploy