Set Password Writeback Persmissions

$accountName = "ADDSConnectuser"
$ForestDN = “OU=xxx,DC=xxx,DC=xxx”
$domain = (Get-ADDomain).Forest

Import-Module "C:\Program Files\Microsoft Azure Active Directory Connect\AdSyncConfig\AdSyncConfig.psm1"

Get-Command -Module AdsyncConfig
Set-ADSyncPasswordWritebackPermissions -ADConnectorAccountName $accountName -ADConnectorAccountDomain $domain -ADobjectDN $ForestDN


#Source: https://c7solutions.com/2015/07/configuring-writeback-permissions-in-active-directory-for-azure-active-directory-sync