ConnectToMSGraphWithMIandKeyVault2.ps1

# Connect to Azure using af Managed Identity (VM)
Connect-AzAccount -Identity 

$KeyVaultName = "" # The name of your Azure Key Vault
$KeyVaultSecretName = "" # The name of the Secret entry in the Azure Key Vault
$KeyVaultTenantIDName = "" # The name of the TenantID entry in the Azure Key Vault
$KeyVaultClientIDName = "" # The name of the ClientID entry in the Azure Key Vault

# Fetch the values from the Azure Key vault
$KeyVaultSecret = Get-AzKeyVaultSecret -VaultName $KeyVaultName -Name $KeyVaultSecretName -AsPlainText
$KeyVaultTenantID = Get-AzKeyVaultSecret -VaultName $KeyVaultName -Name $KeyVaultTenantIDName -AsPlainText
$KeyVaultClientID = Get-AzKeyVaultSecret -VaultName $KeyVaultName -Name $KeyVaultClientIDName -AsPlainText

# Connect to the Microsoft Graph with the Service Principal usinge the values from the Azure Key vault
$body =  @{
    Grant_Type    = "client_credentials"
    Scope         = "https://graph.microsoft.com/.default"
    Client_Id     = $KeyVaultClientID
    Client_Secret = $KeyVaultSecret
}
 
$connection = Invoke-RestMethod `
    -Uri https://login.microsoftonline.com/$KeyVaultTenantID/oauth2/v2.0/token `
    -Method POST `
    -Body $body
 
$GraphToken = ConvertTo-SecureString $connection.access_token -AsPlainText -Force
Connect-MgGraph -AccessToken $GraphToken -Verbose

# Get users from the Graph
Get-MgUser