I recently started a pilot, i installed and configure AAD connect accordingly, ran the sync and the users did appear in the cloud.
Here is the issue, the UPN was not not pulled, in the username rather than seeing a UPN the user name in the format Sync_ComputerName_RandomAlphanumeric
Any Ideas why?
AAD connect was pretty much configured as per the instructions in the link below:
P.S. I have added the correct UPN Suffix, created the a sync admin user with all the correct permissions, I have not configure synchronization services as this is not necessary at the mo, just used the filtering in the AAD Connect wizard