Load Testing for Azure Virtual Desktop (AVD) Using PowerShell

Question

Load Testing for Azure Virtual Desktop (AVD) Using PowerShell

Azim 56

Hi,

I've created a PowerShell script sourced from the web to perform load testing (also known as synthetic testing) by simulating multiple users accessing servers in Azure Virtual Desktop (AVD).

However, I've encountered a blocker while generating an access token from the Azure portal through the script. I've set up the app registration, assigned API permissions (Microsoft Graph - read.all for both Delegated and Application), and retrieved the secret value.

I'm receiving the following error:

The resource principal named https://rdweb.wvd.microsoft.com was not found in the tenant named ABC COMPANY. This can happen if the application has not been installed by the administrator of the tenant or consented to by any user in the tenant. You might have sent your authentication request to the wrong tenant.

Any guidance on resolving this issue would be appreciated!

Azim 56 Reputation points

2024-12-20T10:32:13.2666667+00:00

Hey Deepanshu,

Thanks for replying regarding my query.

How do i add the application https://rdweb.wvd.microsoft.com to my tenant as this is the remote desktop web client to access AVD environment? Also, the above URL is deprecated soon and has move on to https://windows.cloud.microsoft.

The attached is the script, the errors occurs when I ran #Get Access token till #Display the access token.Draft01.txt
Azim 56 Reputation points

2024-12-20T10:39:47.14+00:00

Draft01.txt

Hi Deepanshu,

Thanks for replying to my query.

How do i add the URL to my tenant as the URL is used to access remote desktop web client to AVD servers? Also the above URL is deprecating soon and will using https://windows.cloud.microsoft/ instead.

The attached is the script and currently I'm running from #Get Access token till # Display the access token. Screenshot 2024-12-20 183809.png

Deepanshu katara 16,720 MVP Moderator

Hello Azim ,

sorry for delay reply

Since the URL https://rdweb.wvd.microsoft.com is used for accessing the Remote Desktop Web Client, you don’t need to manually add it to your tenant. Instead, ensure that:

The application (or service principal) for the Azure Virtual Desktop (AVD) service is registered in your tenant.
The administrator has provided consent for the application to access the resources in the tenant.

You can check the Azure AD enterprise applications section to verify if the https://rdweb.wvd.microsoft.com application exists and has the necessary permissions.

If it doesn’t exist, you can manually add permissions for AVD by registering a custom application in Azure AD, specifying the new endpoint (https://windows.cloud.microsoft) as the resource if needed.

Additionally, since the URL https://rdweb.wvd.microsoft.com is deprecating, you should start updating your scripts to use the new URL https://windows.cloud.microsoft.

Pls try below updated script once

# Import Az module
Import-Module Az

# Variables for Azure Virtual Desktop Environment
$subscriptionId = "xxxxx-xxxx-xxx-xxx"
$resourceGroupName = "MyRG"
$hostPoolName = "MyHostpool"
$sessionHostUser = "testuser"  # FSLogix user profile to test
$password = "password" | ConvertTo-SecureString -AsPlainText -Force
$domain = "abc_company.onmicrosoft.com"  # Domain where the user is authenticated
$sessionCount = 4   # Number of concurrent sessions to simulate
$monitorInterval = 30  # Monitoring interval in seconds

# Get Access token
# Set up the variables
$tenantId = "aaaa-aaaa-aaaa"
$clientId = "bbbb-bbbb-bbbb-bbb"
$clientSecret = "1gebdjsadkbdjqwduqwid2b" # Client secret value from app registration
$resource = "https://windows.cloud.microsoft"  # Updated resource URL for AVD

# Create the request body for the token request
$body = @{
    client_id     = $clientId
    client_secret = $clientSecret
    scope         = "$resource/.default"
    grant_type    = "client_credentials"
}

# Request the token
$uri = "https://login.microsoftonline.com/$tenantId/oauth2/v2.0/token"
$response = Invoke-RestMethod -Method Post -Uri $uri -ContentType "application/x-www-form-urlencoded" -Body $body

# Extract the access token
$accessToken = $response.access_token

# Display the access token
Write-Output "Access Token: $accessToken"

# Azure Login
Write-Output "Logging into Azure..."
Connect-AzAccount -UseDeviceAuthentication

# Get Session Hosts in the Host Pool
Write-Output "Retrieving session hosts in the Host Pool..."
$sessionHosts = Get-AzWvdSessionHost -ResourceGroupName $resourceGroupName -HostPoolName $hostPoolName

if (-not $sessionHosts) {
    Write-Output "No session hosts found in the specified host pool."
    exit
}

# Simulate User Logins via Azure Virtual Desktop API
Write-Output "Starting user login simulation..."
for ($i = 1; $i -le $sessionCount; $i++) {
    $host1 = $sessionHosts[$i % $sessionHosts.Count]  # Round-robin session host selection

    # API URL for user sessions
    $apiUrl = "https://management.azure.com/subscriptions/$subscriptionId/resourceGroups/$resourceGroupName/providers/Microsoft.DesktopVirtualization/hostPools/$hostPoolName/userSessions?api-version=2022-02-10"

    # Construct the payload or parameters as needed
    $body = @{
        username = "$domain\$sessionHostUser"
    }

    # API call for session interaction
    $response = Invoke-RestMethod -Method Post -Uri $apiUrl -Headers @{
        Authorization = "Bearer $accessToken"
    } -Body ($body | ConvertTo-Json -Depth 10)

    Write-Output "Simulated user login for session host $($host1.SessionHostName): $response.status"
    Start-Sleep -Seconds 2  # Delay to avoid overwhelming session hosts
}

# Monitor Performance Metrics
Write-Output "Monitoring session host performance..."
while ($true) {
    foreach ($host2 in $sessionHosts) {
        # Performance metrics can be retrieved and printed here as required
        # Example placeholders below (replace with actual calls if available)
        Write-Output "Session Host: $($host2.SessionHostName)"
        Write-Output "    CPU Usage: Placeholder%"
        Write-Output "    Memory Usage: Placeholder MB"
        Write-Output "    Sessions Active: Placeholder"
    }
    Start-Sleep -Seconds $monitorInterval
}

Azim 56 Reputation points

2025-01-03T18:39:30.2333333+00:00

thanks for sharing! I'll test those when i'm available

1 answer

Your answer

Azim 56 Reputation points

2024-12-20T10:32:13.2666667+00:00

Hey Deepanshu,

Thanks for replying regarding my query.

How do i add the application https://rdweb.wvd.microsoft.com to my tenant as this is the remote desktop web client to access AVD environment? Also, the above URL is deprecated soon and has move on to https://windows.cloud.microsoft.

The attached is the script, the errors occurs when I ran #Get Access token till #Display the access token.Draft01.txt
Azim 56 Reputation points

2024-12-20T10:39:47.14+00:00

Draft01.txt

Hi Deepanshu,

Thanks for replying to my query.

How do i add the URL to my tenant as the URL is used to access remote desktop web client to AVD servers? Also the above URL is deprecating soon and will using https://windows.cloud.microsoft/ instead.

The attached is the script and currently I'm running from #Get Access token till # Display the access token. Screenshot 2024-12-20 183809.png
Azim 56 Reputation points

2025-01-03T18:39:30.2333333+00:00

thanks for sharing! I'll test those when i'm available

Answer 1

Deepanshu katara 16,720 MVP Moderator

Hello Azim , Welcome to MS Q&A

The error message indicates that the resource principal https://rdweb.wvd.microsoft.com was not found in the tenant named ABC COMPANY. This can happen if the application has not been installed by the administrator of the tenant or consented to by any user in the tenant. It is also possible that the authentication request was sent to the wrong tenant.

To resolve this issue, please ensure the following:

The application https://rdweb.wvd.microsoft.com has been installed and consented to by an administrator in the tenant ABC COMPANY.
The authentication request is being sent to the correct tenant.

If you need further assistance, please provide more details about your Azure Virtual Desktop setup and the PowerShell script you are using.

Kindly let us know with further question or details

Thanks

Deepanshu

Deepanshu katara 16,720 MVP Moderator

Pls check below script for ref.

# Import Az module
Import-Module Az

# Variables for Azure Virtual Desktop Environment
$subscriptionId = "xxxxx-xxxx-xxx-xxx"
$resourceGroupName = "MyRG"
$hostPoolName = "MyHostpool"
$sessionHostUser = "testuser"  # FSLogix user profile to test
$password = "password" | ConvertTo-SecureString -AsPlainText -Force
$domain = "abc_company.onmicrosoft.com"  # Domain where the user is authenticated
$sessionCount = 4   # Number of concurrent sessions to simulate
$monitorInterval = 30  # Monitoring interval in seconds

# Get Access token
# Set up the variables
$tenantId = "aaaa-aaaa-aaaa"
$clientId = "bbbb-bbbb-bbbb-bbb"
$clientSecret = "1gebdjsadkbdjqwduqwid2b" # Client secret value from app registration
$resource = "https://windows.cloud.microsoft"  # Updated resource URL for AVD

# Create the request body for the token request
$body = @{
    client_id     = $clientId
    client_secret = $clientSecret
    scope         = "$resource/.default"
    grant_type    = "client_credentials"
}

# Request the token
$uri = "https://login.microsoftonline.com/$tenantId/oauth2/v2.0/token"
$response = Invoke-RestMethod -Method Post -Uri $uri -ContentType "application/x-www-form-urlencoded" -Body $body

# Extract the access token
$accessToken = $response.access_token

# Display the access token
Write-Output "Access Token: $accessToken"

# Azure Login
Write-Output "Logging into Azure..."
Connect-AzAccount -UseDeviceAuthentication

# Get Session Hosts in the Host Pool
Write-Output "Retrieving session hosts in the Host Pool..."
$sessionHosts = Get-AzWvdSessionHost -ResourceGroupName $resourceGroupName -HostPoolName $hostPoolName

if (-not $sessionHosts) {
    Write-Output "No session hosts found in the specified host pool."
    exit
}

# Simulate User Logins via Azure Virtual Desktop API
Write-Output "Starting user login simulation..."
for ($i = 1; $i -le $sessionCount; $i++) {
    $host1 = $sessionHosts[$i % $sessionHosts.Count]  # Round-robin session host selection

    # API URL for user sessions
    $apiUrl = "https://management.azure.com/subscriptions/$subscriptionId/resourceGroups/$resourceGroupName/providers/Microsoft.DesktopVirtualization/hostPools/$hostPoolName/userSessions?api-version=2022-02-10"

    # Construct the payload or parameters as needed
    $body = @{
        username = "$domain\$sessionHostUser"
    }

    # API call for session interaction
    $response = Invoke-RestMethod -Method Post -Uri $apiUrl -Headers @{
        Authorization = "Bearer $accessToken"
    } -Body ($body | ConvertTo-Json -Depth 10)

    Write-Output "Simulated user login for session host $($host1.SessionHostName): $response.status"
    Start-Sleep -Seconds 2  # Delay to avoid overwhelming session hosts
}

# Monitor Performance Metrics
Write-Output "Monitoring session host performance..."
while ($true) {
    foreach ($host2 in $sessionHosts) {
        # Performance metrics can be retrieved and printed here as required
        # Example placeholders below (replace with actual calls if available)
        Write-Output "Session Host: $($host2.SessionHostName)"
        Write-Output "    CPU Usage: Placeholder%"
        Write-Output "    Memory Usage: Placeholder MB"
        Write-Output "    Sessions Active: Placeholder"
    }
    Start-Sleep -Seconds $monitorInterval
}

Azim 56 Reputation points

2025-01-03T18:39:43.2633333+00:00

thanks for sharing! I'll test those when i'm available

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Load Testing for Azure Virtual Desktop (AVD) Using PowerShell

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