Sync Issues with AAD Connect Service not updating attributes

harveer singh  Thanks for your reply, and sorry it took so long to get back to you. I did a custom install of AAD Connect, and let the installer create a new service account. I have checked the permissions for this account in AD, and they are all fine. And yes, when I search for a changed user in Metaverse I see the updated local object fine, with all the relevant changes, coming from the AD connector. So the updates are making it into AAD Connect. But they just don't get sent to Azure AD. DNS is working fine on the AADC server, and there is no proxy. And no outbound filtering at all on the firewall. Is there any way of seeing what is happening with the export to Azure AD? I can also confirm it isn't just proxy addresses that aren't updating. We have a user who had a surname change done a little over a week ago. If I search the user in Metaverse, I see the account with the updated name and UPN. But if I look for the user in Azure AD, the name and UPN remain as they were before. Yet AADC is running and saying successful.