$secpasswd = ConvertTo-SecureString $env:SP_PASSWORD -AsPlainText -Force;
$mycreds = New-Object System.Management.Automation.PSCredential ($env:SP_USERNAME, $secpasswd)
Add-AzureRmAccount -ServicePrincipal -Tenant $env:TENANTID -Credential $mycreds;
$context = Get-AzureRmContext;
Set-AzureRmContext -Context $context;
# Start VM
Start-AzureRmVM -ResourceGroupName myResourceGroup -Name  myDevice | Out-String

$password = ConvertTo-SecureString "myPassword" -AsPlainText -Force
$cred= New-Object System.Management.Automation.PSCredential ("myUsername", $password )

#Enter-PSSession -ConnectionUri https://<public_ip> -Credential $cred -SessionOption (New-PSSessionOption -SkipCACheck -SkipCNCheck -SkipRevocationCheck) -Authentication Negotiate

$Server="<public_ip>"
$User="myUsername"
$Password="myPassword"
cmdkey /generic:TERMSRV/$Server /user:$User /pass:$Password
mstsc /v:$Server