Following the release of a new version of the AAD Connect, Microsoft has changed again the way to configure the directory synchronization schedule and the manual start.
Enable the schedule
After the installation or the upgrade, the synchronization process has been paused.
To resume it, open a PowerShell console and run the following command Set-ADSyncScheduler -MaintenanceEnabled $false -SyncCycleEnabled $true
Configure the directory synch schedule
As said in my previous post, the new synchronization period is every 30 minutes
If you want/need to change this schedule, open a PowerShell console and run the following command
Manual Start of a Synch
If you need to manually start a synchronization, still within the PowerShell console run the command
Start-ADSyncSyncCycle -PolicyType Delta for delta sync
Start-ADSyncSyncCycle -PolicyType Initial for a full sync