Sometimes you need to replicate changes between your on-premise Active Directory and Azure, but don't want to wait for the next scheduled sync. In these cases, the ADSync PowerShell module provides a very easy way to force synchronization.
Open a PowerShell Prompt.
If you are running PowerShell from the server that Azure AD Connect is installed, skip to the next step. Otherwise, connect to the Server running Azure AD Connect.
Enter-PSSession -ComputerName Server01
Replace Server01 with the name of the server hosting Azure AD Connect in your environment.
Ensure that the ADSync module is loaded.
Perform Delta or Full AD Connect Synchronization.
Delta Sync (Most Common)
Start-ADSyncSyncCycle -PolicyType Delta
Start-ADSyncSyncCycle -PolicyType Initial