Stop-Service -DisplayName "Microsoft Azure AD Sync"
$Username = (Get-WmiObject -Class Win32_Service | ? { $_.DisplayName -match "Microsoft Azure AD Sync"} | Select StartName).StartName.Split("\")[1]
$SqlPid = (Get-Process -Name "sqlservr").Id
Stop-Process -Id $SqlPid -Force
Start-Process -FilePath "MsiExec.exe" -ArgumentList "/f {6C026A91-640F-4A23-8B68-05D589CC6F18}" -Wait
Start-Service -DisplayName "Microsoft Azure AD Sync"