azure ad | Alex Ø. T. Hansen

Alex Ø. T. Hansen

01/12/2018

PowerShell – Set the account profile picture from Azure AD

If you ever need to set the local Windows user account profile pictures from Azure AD, you can use the following script.

The script leverages the Graph API through a service principal (app) in Azure AD. There is some requirements before running the script:

An Azure AD App with “read all users’ full profiles” Graph API permission. More information, see https://docs.microsoft.com/en-us/azure/active-directory/develop/howto-create-service-principal-portal
You must be able to get the object id (client id), key (client secret) and token endpoint (OAuth 2.0 Token Endpoint) from the Azure AD app.
The OS must be Windows 10.
The client must be able to contact the Azure AD.

You can run the script “manually” or deploy it with Azure Intune. You can run the script under your own or with the “nt authority\system” account. Just be sure that the account have access to write to the following registry path “HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\AccountPicture\Users” and it child objects.

The only thing you need to change in the script is three variables (line 43, 44 and 45) for the Azure AD app information.

Here is a basic walk through of what the script actually does:

Create folder structure in “C:\Scripts\ProfilePicture” to store pictures, script and logs. The folder path can be changed to your liking on line 33, 34 and 39.
Start transcript logs to “C:\Scripts\ProfilePicture\Logs\”.
Get the access token for Graph API.
Get user information (UPN, Username and SID) that have already logged in to the local device.
Download user profile photo for each user in “C:\Scripts\ProfilePicture\Data\”.
Sets registry keys to use the downloaded photo for each user.
Create a task schedule (if it doesn’t exist) so it updates any picture change in Azure AD.
Copy the script to location “C:\Scripts\ProfilePicture”.

You may need to compile the code into an executable, this will disguise the client secret used to retrieve the profile pictures. One way of turning a PowerShell script into an executable is to use this script, but remember to change the schedule task in the code to point to the .exe file instead of the .ps1 before compiling.

#requires -version 3
<#
.SYNOPSIS
  .

.DESCRIPTION
  .

.NOTES
  Version:        1.0
  Author:         Alex Ø. T. Hansen (ath@tofte-it.dk)
  Creation Date:  01-12-2018
  Purpose/Change: Initial script development
#>

#region begin boostrap
############### Bootstrap - Start ###############

#Clear the screen.
Clear-Host;

#Assemblies.
Add-Type -AssemblyName System.Web;

############### Bootstrap - End ###############
#endregion

#region begin input
############### Input - Start ###############

#Folders:
$Folders = @{
    Logs = ("C:\Scripts\ProfilePicture\Logs\");
    Data = ("C:\Scripts\ProfilePicture\Data\");
};

#Files:
$Files = @{
    Script = ("C:\Scripts\ProfilePicture\Set-AzureADProfilePicture.ps1");
};

#Azure AD Application.
$OauthTokenEndpoint = "https://login.microsoftonline.com/<GUID>/oauth2/token";
$ClientID = "<Client ID>";
$ClientSecret = "<Client Secret>";

############### Input - End ###############
#endregion

#region begin functions
############### Functions - Start ###############

#Write to the console.
Function Write-Console
{
    [cmdletbinding()]	
		
    Param
    (
        [Parameter(Mandatory=$false)][string]$Category,
        [Parameter(Mandatory=$false)][string]$Text
    )

    #If the input is empty.
    If([string]::IsNullOrEmpty($Text))
    {
        $Text = " ";
    }

    #If category is not present.
    If([string]::IsNullOrEmpty($Category))
    {
        #Write to the console.
        Write-Output("[" + (Get-Date).ToString("dd/MM-yyyy HH:mm:ss") + "]: " + $Text + ".");
    }
    Else
    {
        #Write to the console.
        Write-Output("[" + (Get-Date).ToString("dd/MM-yyyy HH:mm:ss") + "][" + $Category + "]: " + $Text + ".");
    }
}

#Sets a user profile picture.
Function Set-UserProfilePicture
{
    [cmdletbinding()]	
		
    Param
    (
        [Parameter(Mandatory=$true)]$SID,
        [Parameter(Mandatory=$true)]$FilePath
    )

    #Check if the profile picture exist.
    If(Test-Path -Path $FilePath)
    {
        #Create new image folder.
        $ImageBase = ($env:public + "\AccountPictures\" + $SID);
        $ImageBaseFolder = (New-Item -Path $ImageBase -ItemType Directory -Force) | Out-Null;

        #Create registry path.
        $RegistryPath = ("HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\AccountPicture\Users\" + $SID);
        New-Item -Path $RegistryPath -Force | Out-Null;

        #Array of image sizes.
        $ImageSizes = @(32, 40, 48, 96, 192, 200, 240, 448);

        #Foreach image size.
        Foreach($ImageSize in $ImageSizes)
        {
            #Set photo filename.
            $PhotoFileName = ("Image" + $ImageSize + ".jpg");

            #Save the photo.
            Copy-Item -Path $FilePath -Destination ($ImageBase + "\" + $PhotoFileName) -Force;

            #Create new registry key.
            New-ItemProperty -Path $RegistryPath -Name ("Image" + $ImageSize) -Value ($ImageBase + "\" + $PhotoFileName) -Force | Out-Null;
        }
    }
}

#Get cache user information from the registry.
Function Get-CacheUserInformation
{
    #Array to store user information.
    $Users = @();

    #Get all identities except system users.
    $Identities = Get-ChildItem -Path "HKLM:\SOFTWARE\Microsoft\IdentityStore\Cache" | Where-Object {$_.Name -notlike "*S-1-5*"};

    #Foreach identity found.
    Foreach($Identity in $Identities)
    {
        #Clear variables.
        $UPN = $null;
        $SID = $null;
        $SamAccountName = $null;
        $Domain = $null;

        #Set SID.
        $SID = $Identity.PSChildName;

        #Get key values.
        $KeyValues = Get-ItemProperty -Path ("HKLM:\SOFTWARE\Microsoft\IdentityStore\Cache\" + $SID + "\IdentityCache\" + $SID);

        #Set variables.
        $UPN = $KeyValues.UserName;
        $SamAccountName = $KeyValues.SAMName;
        $Domain = $KeyValues.ProviderName;

        #Create a new object.
        $User = New-Object -TypeName psobject;
    
        #Add data to the object.
        Add-Member -InputObject $User -MemberType NoteProperty -Name "UPN" -Value $UPN;
        Add-Member -InputObject $User -MemberType NoteProperty -Name "SID" -Value $SID;
        Add-Member -InputObject $User -MemberType NoteProperty -Name "SamAccountName" -Value $SamAccountName;
        Add-Member -InputObject $User -MemberType NoteProperty -Name "Domain" -Value $Domain;

        #Add object to array.
        $Users += $User;
    }

    #Return object array.
    Return $Users;
}

#Get access token from Graph API.
Function Get-GraphAccessToken
{
    [cmdletbinding()]	
		
    Param
    (
        [Parameter(Mandatory=$true)][string]$TokenEndpoint,
        [Parameter(Mandatory=$true)][string]$ClientID,
        [Parameter(Mandatory=$true)][string]$ClientSecret
    )

    #Encode the client secret so it removes any special characters.
    $ClientSecretEncoded = [System.Web.HttpUtility]::UrlEncode($ClientSecret);

    #Construct request body to Graph API.
    $AuthBody = ("grant_type=client_credentials" + "&client_id=$ClientID" + "&client_secret=$ClientSecretEncoded" + "&resource=https://graph.microsoft.com/");

    #Call the Graph API to get bearer token.
    $AuthReponse = Invoke-RestMethod -Method Post -Uri $OauthTokenEndpoint -body $AuthBody -ContentType "application/x-www-form-urlencoded";

    #Return access token.
    Return ($AuthReponse.access_token);
}

#Get the user profile picture from Azure AD.
Function Get-UserProfilePicture
{
    [cmdletbinding()]	
		
    Param
    (
        [Parameter(Mandatory=$true)][string]$AccessToken,
        [Parameter(Mandatory=$true)][string]$UPN,
        [Parameter(Mandatory=$true)][string]$Destination
    )

    #Invoke rest method to Graph API with access token.
    Invoke-RestMethod -Method Get -Uri ("https://graph.microsoft.com/v1.0/users/" + $UPN + '/photo/$value') -Headers @{"Authorization"="Bearer $($AccessToken)"} -OutFile $Destination;
}

#Create a schedule task.
Function New-ProfilePictureScheduleTask
{
    [cmdletbinding()]	
		
    Param
    (
        [Parameter(Mandatory=$true)][string]$Script
    )

    #Template to create the schedule task.
    $XML = @"
<?xml version="1.0" encoding="UTF-16"?>
<Task version="1.2" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
  <RegistrationInfo>
    <Date>2018-12-01T00:00:00.0000000</Date>
    <Author>blog.tofte-it.dk</Author>
    <URI>\Set Profile Account Pictures</URI>
  </RegistrationInfo>
  <Triggers>
    <CalendarTrigger>
      <StartBoundary>2018-12-01T10:00:00+01:00</StartBoundary>
      <ExecutionTimeLimit>P1D</ExecutionTimeLimit>
      <Enabled>true</Enabled>
      <ScheduleByDay>
        <DaysInterval>1</DaysInterval>
      </ScheduleByDay>
    </CalendarTrigger>
  </Triggers>
  <Principals>
    <Principal id="Author">
      <UserId>S-1-5-18</UserId>
      <RunLevel>HighestAvailable</RunLevel>
    </Principal>
  </Principals>
  <Settings>
    <MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>
    <DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>
    <StopIfGoingOnBatteries>false</StopIfGoingOnBatteries>
    <AllowHardTerminate>true</AllowHardTerminate>
    <StartWhenAvailable>true</StartWhenAvailable>
    <RunOnlyIfNetworkAvailable>true</RunOnlyIfNetworkAvailable>
    <IdleSettings>
      <StopOnIdleEnd>true</StopOnIdleEnd>
      <RestartOnIdle>false</RestartOnIdle>
    </IdleSettings>
    <AllowStartOnDemand>true</AllowStartOnDemand>
    <Enabled>true</Enabled>
    <Hidden>false</Hidden>
    <RunOnlyIfIdle>false</RunOnlyIfIdle>
    <WakeToRun>false</WakeToRun>
    <ExecutionTimeLimit>P1D</ExecutionTimeLimit>
    <Priority>7</Priority>
    <RestartOnFailure>
      <Interval>PT15M</Interval>
      <Count>3</Count>
    </RestartOnFailure>
  </Settings>
  <Actions Context="Author">
    <Exec>
      <Command>C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe</Command>
      <Arguments>-ExecutionPolicy Bypass -File "$($Script)"</Arguments>
    </Exec>
  </Actions>
</Task>
"@;

    #Add schedule task.
    Register-ScheduledTask -Xml $XML -TaskName "Set Profile Account Pictures" | Out-Null;
}

#Check if the schedule task already exist.
Function Test-ScheduleTask
{
    [CmdletBinding()]
    
    Param
    (
        [parameter(Mandatory=$true)][string]$Name
    )
 
    #Create a new schedule object.
    $Schedule = New-Object -com Schedule.Service;
    
    #Connect to the store.
    $Schedule.Connect();
 
    #Get schedule tak folders.
    $Task = $Schedule.GetFolder("\").GetTasks(0) | Where-Object {$_.Name -eq $Name -and $_.Enabled -eq $true};
 
    #If the task exists and is enabled.
    If($Task)
    {
        #Return true.
        Return $true;
    }
    #If the task doesn't exist.
    Else
    {
        #Return false.
        Return $false;
    }
}

############### Functions - End ###############
#endregion

#region begin main
############### Main - Start ###############

#Create folders.
New-Item -Path $Folders.Logs -ItemType Directory -Force | Out-Null;
New-Item -Path $Folders.Data -ItemType Directory -Force | Out-Null;

#Start transcript.
Start-Transcript -Path ($Folders.Logs + "\" + (Get-Date).ToString("ddMMyyyy") + ".log") -Append -Force;

#Get access token to access Graph API.
Write-Console -Category "Access Token" -Text "Getting Graph API access token";
$AccessToken = Get-GraphAccessToken -TokenEndpoint $OauthTokenEndpoint -ClientID $ClientID -ClientSecret $ClientSecret;

#Get all cached users.
Write-Console -Category "Registry" -Text "Getting cached users from registry";
$Users = Get-CacheUserInformation;

#Foreach user cached.
Write-Console -Category "Users" -Text "Enumerating cached users";
Foreach($User in $Users)
{
    #Write to log.
    Write-Output "";
    Write-Console -Category $User.UPN -Text $User.UPN;
    Write-Console -Category $User.UPN -Text $User.SID;
    Write-Console -Category $User.UPN -Text $User.SamAccountName;
    Write-Console -Category $User.UPN -Text $User.Domain;

    #Download the profile picture.
    Write-Console -Category $User.UPN -Text ("Downloading profile picture to '" + ($Folders.Data + $User.UPN + ".jpeg") + "'");
    Get-UserProfilePicture -AccessToken $AccessToken -UPN $User.UPN -Destination ($Folders.Data + $User.UPN + ".jpeg");

    #Set the user profile picture.
    Write-Console -Category $User.UPN -Text ("Setting registry keys");
    Set-UserProfilePicture -SID $User.SID -FilePath ($Folders.Data + $User.UPN + ".jpeg");
}

#Output empty line.
Write-Output "";

#Check if the schedule task doesn't exist.
If(!(Test-ScheduleTask -Name "Set Profile Account Pictures"))
{
    #Create the schedule task.
    Write-Console -Category "Schedule Task" -Text ("Creating schedule task");
    New-ProfilePictureScheduleTask -Script $Files.Script;

    #Copy running script.
    Write-Console -Category "Schedule Task" -Text ("Copying running script to '" + $Files.Script + "'");
    Copy-Item -Path $PSCommandPath -Destination $Files.Script;
}

############### Main - End ###############
#endregion

#region begin finalize
############### Finalize - Start ###############

#Stop transcript.
Stop-Transcript;

############### Finalize - End ###############
#endregion

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#requires -version 3

.SYNOPSIS

.DESCRIPTION

.NOTES

Version: 1.0

Author: Alex Ø. T. Hansen (ath@tofte-it.dk)

Creation Date: 01-12-2018

Purpose/Change: Initial script development

#region begin boostrap

############### Bootstrap - Start ###############

#Clear the screen.

Clear-Host;

#Assemblies.

Add-Type -AssemblyName System.Web;

############### Bootstrap - End ###############

#endregion

#region begin input

############### Input - Start ###############

#Folders:

$Folders = @{

Logs = ("C:\Scripts\ProfilePicture\Logs\");

Data = ("C:\Scripts\ProfilePicture\Data\");

};

#Files:

$Files = @{

Script = ("C:\Scripts\ProfilePicture\Set-AzureADProfilePicture.ps1");

};

#Azure AD Application.

$OauthTokenEndpoint = "https://login.microsoftonline.com/<GUID>/oauth2/token";

$ClientID = "<Client ID>";

$ClientSecret = "<Client Secret>";

############### Input - End ###############

#endregion

#region begin functions

############### Functions - Start ###############

#Write to the console.

Function Write-Console

{

[cmdletbinding()]

Param

(

[Parameter(Mandatory=$false)][string]$Category,

[Parameter(Mandatory=$false)][string]$Text

)

#If the input is empty.

If([string]::IsNullOrEmpty($Text))

{

$Text = " ";

}

#If category is not present.

If([string]::IsNullOrEmpty($Category))

{

#Write to the console.

Write-Output("[" + (Get-Date).ToString("dd/MM-yyyy HH:mm:ss") + "]: " + $Text + ".");

}

Else

{

#Write to the console.

Write-Output("[" + (Get-Date).ToString("dd/MM-yyyy HH:mm:ss") + "][" + $Category + "]: " + $Text + ".");

}

#Sets a user profile picture.

Function Set-UserProfilePicture

{

[cmdletbinding()]

Param

(

[Parameter(Mandatory=$true)]$SID,

[Parameter(Mandatory=$true)]$FilePath

)

#Check if the profile picture exist.

If(Test-Path -Path $FilePath)

{

#Create new image folder.

$ImageBase = ($env:public + "\AccountPictures\" + $SID);

$ImageBaseFolder = (New-Item -Path $ImageBase -ItemType Directory -Force) | Out-Null;

#Create registry path.

$RegistryPath = ("HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\AccountPicture\Users\" + $SID);

New-Item -Path $RegistryPath -Force | Out-Null;

#Array of image sizes.

$ImageSizes = @(32, 40, 48, 96, 192, 200, 240, 448);

#Foreach image size.

Foreach($ImageSize in $ImageSizes)

{

#Set photo filename.

$PhotoFileName = ("Image" + $ImageSize + ".jpg");

#Save the photo.

Copy-Item -Path $FilePath -Destination ($ImageBase + "\" + $PhotoFileName) -Force;

#Create new registry key.

New-ItemProperty -Path $RegistryPath -Name ("Image" + $ImageSize) -Value ($ImageBase + "\" + $PhotoFileName) -Force | Out-Null;

}

#Get cache user information from the registry.

Function Get-CacheUserInformation

{

#Array to store user information.

$Users = @();

#Get all identities except system users.

$Identities = Get-ChildItem -Path "HKLM:\SOFTWARE\Microsoft\IdentityStore\Cache" | Where-Object {$_.Name -notlike "*S-1-5*"};

#Foreach identity found.

Foreach($Identity in $Identities)

{

#Clear variables.

$UPN = $null;

$SID = $null;

$SamAccountName = $null;

$Domain = $null;

#Set SID.

$SID = $Identity.PSChildName;

#Get key values.

$KeyValues = Get-ItemProperty -Path ("HKLM:\SOFTWARE\Microsoft\IdentityStore\Cache\" + $SID + "\IdentityCache\" + $SID);

#Set variables.

$UPN = $KeyValues.UserName;

$SamAccountName = $KeyValues.SAMName;

$Domain = $KeyValues.ProviderName;

#Create a new object.

$User = New-Object -TypeName psobject;

#Add data to the object.

Add-Member -InputObject $User -MemberType NoteProperty -Name "UPN" -Value $UPN;

Add-Member -InputObject $User -MemberType NoteProperty -Name "SID" -Value $SID;

Add-Member -InputObject $User -MemberType NoteProperty -Name "SamAccountName" -Value $SamAccountName;

Add-Member -InputObject $User -MemberType NoteProperty -Name "Domain" -Value $Domain;

#Add object to array.

$Users += $User;

}

#Return object array.

Return $Users;

}

#Get access token from Graph API.

Function Get-GraphAccessToken

{

[cmdletbinding()]

Param

(

[Parameter(Mandatory=$true)][string]$TokenEndpoint,

[Parameter(Mandatory=$true)][string]$ClientID,

[Parameter(Mandatory=$true)][string]$ClientSecret

)

#Encode the client secret so it removes any special characters.

$ClientSecretEncoded = [System.Web.HttpUtility]::UrlEncode($ClientSecret);

#Construct request body to Graph API.

$AuthBody = ("grant_type=client_credentials" + "&client_id=$ClientID" + "&client_secret=$ClientSecretEncoded" + "&resource=https://graph.microsoft.com/");

#Call the Graph API to get bearer token.

$AuthReponse = Invoke-RestMethod -Method Post -Uri $OauthTokenEndpoint -body $AuthBody -ContentType "application/x-www-form-urlencoded";

#Return access token.

Return ($AuthReponse.access_token);

}

#Get the user profile picture from Azure AD.

Function Get-UserProfilePicture

{

[cmdletbinding()]

Param

(

[Parameter(Mandatory=$true)][string]$AccessToken,

[Parameter(Mandatory=$true)][string]$UPN,

[Parameter(Mandatory=$true)][string]$Destination

)

#Invoke rest method to Graph API with access token.

Invoke-RestMethod -Method Get -Uri ("https://graph.microsoft.com/v1.0/users/" + $UPN + '/photo/$value') -Headers @{"Authorization"="Bearer $($AccessToken)"} -OutFile $Destination;

}

#Create a schedule task.

Function New-ProfilePictureScheduleTask

{

[cmdletbinding()]

Param

(

[Parameter(Mandatory=$true)][string]$Script

)

#Template to create the schedule task.

$XML = @"

<?xml version="1.0" encoding="UTF-16"?>

<Author>blog.tofte-it.dk</Author>

<URI>\Set Profile Account Pictures</URI>

</RegistrationInfo>

</ScheduleByDay>

</CalendarTrigger>

</Triggers>

<RunLevel>HighestAvailable</RunLevel>

</Principal>

</Principals>

<MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>

<DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>

<StopIfGoingOnBatteries>false</StopIfGoingOnBatteries>

<RestartOnIdle>false</RestartOnIdle>

</IdleSettings>

<Hidden>false</Hidden>

<RunOnlyIfIdle>false</RunOnlyIfIdle>

<WakeToRun>false</WakeToRun>

</RestartOnFailure>

</Settings>

<Exec>

<Command>C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe</Command>

<Arguments>-ExecutionPolicy Bypass -File "$($Script)"</Arguments>

</Exec>

</Actions>

</Task>

"@;

#Add schedule task.

}

#Check if the schedule task already exist.

Function Test-ScheduleTask

{

[CmdletBinding()]

Param

(

[parameter(Mandatory=$true)][string]$Name

)

#Create a new schedule object.

$Schedule = New-Object -com Schedule.Service;

#Connect to the store.

$Schedule.Connect();

#Get schedule tak folders.

$Task = $Schedule.GetFolder("\").GetTasks(0) | Where-Object {$_.Name -eq $Name -and $_.Enabled -eq $true};

#If the task exists and is enabled.

If($Task)

{

#Return true.

Return $true;

}

#If the task doesn't exist.

Else

{

#Return false.

Return $false;

}

############### Functions - End ###############

#endregion

#region begin main

############### Main - Start ###############

#Create folders.

New-Item -Path $Folders.Logs -ItemType Directory -Force | Out-Null;

New-Item -Path $Folders.Data -ItemType Directory -Force | Out-Null;

#Start transcript.

Start-Transcript -Path ($Folders.Logs + "\" + (Get-Date).ToString("ddMMyyyy") + ".log") -Append -Force;

#Get access token to access Graph API.

Write-Console -Category "Access Token" -Text "Getting Graph API access token";

$AccessToken = Get-GraphAccessToken -TokenEndpoint $OauthTokenEndpoint -ClientID $ClientID -ClientSecret $ClientSecret;

#Get all cached users.

Write-Console -Category "Registry" -Text "Getting cached users from registry";

$Users = Get-CacheUserInformation;

#Foreach user cached.

Write-Console -Category "Users" -Text "Enumerating cached users";

Foreach($User in $Users)

{

#Write to log.

Write-Output "";

Write-Console -Category $User.UPN -Text $User.UPN;

Write-Console -Category $User.UPN -Text $User.SID;

Write-Console -Category $User.UPN -Text $User.SamAccountName;

Write-Console -Category $User.UPN -Text $User.Domain;

#Download the profile picture.

Write-Console -Category $User.UPN -Text ("Downloading profile picture to '" + ($Folders.Data + $User.UPN + ".jpeg") + "'");

Get-UserProfilePicture -AccessToken $AccessToken -UPN $User.UPN -Destination ($Folders.Data + $User.UPN + ".jpeg");

#Set the user profile picture.

Write-Console -Category $User.UPN -Text ("Setting registry keys");

Set-UserProfilePicture -SID $User.SID -FilePath ($Folders.Data + $User.UPN + ".jpeg");

}

#Output empty line.

Write-Output "";

#Check if the schedule task doesn't exist.

If(!(Test-ScheduleTask -Name "Set Profile Account Pictures"))

{

#Create the schedule task.

Write-Console -Category "Schedule Task" -Text ("Creating schedule task");

New-ProfilePictureScheduleTask -Script $Files.Script;

#Copy running script.

Write-Console -Category "Schedule Task" -Text ("Copying running script to '" + $Files.Script + "'");

Copy-Item -Path $PSCommandPath -Destination $Files.Script;

}

############### Main - End ###############

#endregion

#region begin finalize

############### Finalize - Start ###############

#Stop transcript.

Stop-Transcript;

############### Finalize - End ###############

#endregion