With AAD Connect 1.1, Microsoft no longer have a Windows scheduled task running every 3 hours.

 

To check the scheduler’s current configuration:

Start Windows PowerShell on the server running the AAD connect 1.1 and type

Import-Module ADSync

followed by

Get-ADSyncScheduler

 

To force a full sync from Windows PowerShell

Import-Module ADSync

followed by

Start-ADSyncSyncCycle -PolicyType Initial

 

To force a delta sync:

Import-Module ADSync

followed by

Start-ADSyncSyncCycle -PolicyType Delta