test port connectivity to Microsoft Endpoints using powershell. Run on Service Connection Point.

scpEndpointPortConnectionTest.ps1

$endpoint ='aka.ms','manage.microsoft.com','dc.visualstudio.com','graph.windows.net',
'go.microsoft.com','management.azure.com','login.microsoftonline.com','aadcdn.msauth.net',
'aadcdn.msftauth.net','configmgrbits.azureedge.net','login.live.com','login.windows.net',
'account.live.com','clientconfig.passport.net','gateway.configmgr.manage.microsoft.com'
foreach ($i in $endpoint) {
$Result = (Test-NetConnection $i -Port 443).TcpTestSucceeded
if ($Result -eq $True) {
      Write-Host "Connection to $i ...... Succeeded." -ForegroundColor Green
 } else {
     Write-Host "Connection to $i .......... failed." -ForegroundColor Red }
 }