Backgrounds

Steve_Prentice So I'm not hosting these images in an Azure blob. What I implemented in my environment was deploying this as an Intune Win32 App and using PowerShell scripts to Install, Uninstall and Detect the correct files are placed in both the Old Teams Background directory and the New Teams. Since our org are still on a mix of both app variants. As far as wanting to update images, what you can do is when their are new images you can just create a new Intune App with the new photos whenever you have new images to upload. The GUID is a unique identifier so different images won't have the same GUID.

If anyone would like to go that route, below is what I setup. 

• I have a directory with the install/uninstall/detection Scripts and a folder called bg that contains all the background images, you can place as many as you want. 
  • 

     

  • Using the IntuneWinAppUtil.exe I package all the files for creating the app on Intune
  • When creating the app I used these Install/Uninstall commands
    • Install: 

      %SystemRoot%\sysnative\WindowsPowerShell\v1.0\powershell.exe -executionpolicy bypass -command .\install.ps1

    • Uninstall: 

      %SystemRoot%\sysnative\WindowsPowerShell\v1.0\powershell.exe -executionpolicy bypass -command .\uninstall.ps1

    • 

       

Below are the scripts for this app:

install.ps1

$PackageName = "Teams-Backgrounds"
$Version = "1"

$Path_4Log = "$ENV:LOCALAPPDATA\_MEM"
Start-Transcript -Path "$Path_4Log\Log\$PackageName-install.log" -Force
$ErrorActionPreference = "Stop"

try{
    # Local folder
    $TeamsBG_Folder = "$env:APPDATA\Microsoft\Teams\Backgrounds\Uploads"
    $TeamsBG_Folder_New = "$env:LOCALAPPDATA\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams\Backgrounds\Uploads"
    # Ensure the folder is present
    New-Item -ItemType directory -Path $TeamsBG_Folder -Force
    
    # Copy backgrounds
New-Item -ItemType directory -Path $TeamsBG_Folder_New -Force
Copy-Item -path ".\bg\*" -Destination $TeamsBG_Folder_New -Recurse -Force
    Copy-Item -path '.\bg\*' -Destination $TeamsBG_Folder -Recurse -Force

    # Validation File
    New-Item -Path "$Path_4Log\Validation\$PackageName" -ItemType "file" -Value $Version -Force
}catch{
    Write-Host "_____________________________________________________________________"
    Write-Host "ERROR"
    Write-Host "$_"
    Write-Host "_____________________________________________________________________"
}

Stop-Transcript

uninstall.ps1

$PackageName = "Teams-Backgrounds"

$Path_4Log = "$ENV:LOCALAPPDATA\_MEM"
Start-Transcript -Path "$Path_4Log\Log\$PackageName-uninstall.log" -Force

$TeamsBG_Folder = "$env:APPDATA\Microsoft\Teams\Backgrounds\Uploads"
$TeamsBG_Folder_New = "$env:LOCALAPPDATA\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams\Backgrounds\Uploads"
$TeamsBG_Files = Get-ChildItem -Path '.\bg' -Name

# Delete distributed backgrounds

Get-ChildItem $TeamsBG_Folder_New | Where{$_.Name -in $TeamsBG_Files} | Remove-Item
Get-ChildItem $TeamsBG_Folder | Where{$_.Name -in $TeamsBG_Files} | Remove-Item

# Delete detection file
Remove-Item -Path "$Path_4Log\Validation\$PackageName" -Force

Stop-Transcript

check.ps1 

$PackageName = "Teams-Backgrounds"
$Version = "1"

$Path_4Log = "$ENV:LOCALAPPDATA\_MEM"
$ProgramVersion_current = Get-Content -Path "$Path_4Log\Validation\$PackageName"

if($ProgramVersion_current -eq $Version){
    Write-Host "Found it!"
}

I hope this helps anyone looking for an alternative way to deploy teams backgrounds.

aaronm443 
Yes you also need to have a Thumbnail for each background picture. That Thumbnail needs to match the GUID of the background picture:

• 0b19f8d7-66d7-8856-ba5a-aaa04a3d309d.jpeg
• 0b19f8d7-66d7-8856-ba5a-aaa04a3d309d_thumb.jpeg

In my approach, I use an Azure Blob to store the pictures with their Thumbail (I add them manually to "classic" Teams beforehand, grab them from the "Uploads" Folder and upload them to the Blob).
Then my PowerShell Script (distributed via Intune) downloads all Files from that Blob. If NewTeamsIsPresent on the System where the Script runs, it downloads the same file as for "classic" Teams but creates a GUID from the Filename. 

As I was quite happy that you found the needed Path for the "New" Teams Client, I'll happily share my working Script with you. May it be helpful for some1 out there:

https://github.com/yamautomate/Set-TeamsCustomBackgrounds