Exception calling "AcquireToken" with "4" argument(s): "AADSTS50001: The application named https://myappwithapi/Login was not found in the tenant named me.onmicrosoft.com.

#setup
$TenantName = "mme.onmicrosoft.com"
$clientId = "1950a258-227b-4e31-a9cf-717495945fc2" # Microsoft
$clientId = "03faf8db-..........................." #

$username = "me@me.onmicrosoft.com"
$password = Read-Host -AsSecureString -Prompt "Enter Password"


# add dlls
$adal = "${env:ProgramFiles(x86)}Microsoft SDKsAzurePowerShellServiceManagementAzureServicesMicrosoft.IdentityModel.Clients.ActiveDirectory.dll"
$adalforms = "${env:ProgramFiles(x86)}Microsoft SDKsAzurePowerShellServiceManagementAzureServicesMicrosoft.IdentityModel.Clients.ActiveDirectory.WindowsForms.dll"
$adalplatform = "${env:ProgramFiles(x86)}Microsoft SDKsAzurePowerShellServiceManagementAzureServicesMicrosoft.IdentityModel.Clients.ActiveDirectory.platform.dll"
[System.Reflection.Assembly]::LoadFrom($adal) | Out-Null
[System.Reflection.Assembly]::LoadFrom($adalforms) | Out-Null
[System.Reflection.Assembly]::LoadFrom($adalplatform) | Out-Null



#prep request
$redirectUri = "urn:ietf:wg:oauth:2.0:oob" # Microsoft
$resourceAppIdURI = "https://graph.windows.net"
$authority = "https://login.windows.net/$TenantName"
$authContext = New-Object "Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext" -ArgumentList $authority


# Get Token prompting for creds
$authResult = $authContext.AcquireToken($resourceAppIdURI, $clientId, $redirectUri, "Always")
$authResult


# Get the cred
$cred = New-Object -TypeName 'Microsoft.IdentityModel.Clients.ActiveDirectory.UserCredential' -ArgumentList $username, $password
#$cred = New-Object -TypeName 'Microsoft.IdentityModel.Clients.ActiveDirectory.UserPassCredential' -ArgumentList $username, $password
$authResult = $authContext.AcquireToken($resourceAppIdURI, $clientId, $cred)

$authResult