With older DirSync tool version to force synchronization, log into your server that has the Directory Synchronization tool installed.  Open up PowerShell and navigate to C:\Program Files\Microsoft Online Directory Sync.  Then start the Directory Sync Configuration Shell by typing.\DirSyncConfigShell.psc1

Or because you have fancy PowerShell tools available you can also launch DirSyn tool remotely with following command:

Invoke-Command -ComputerName {C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -psconsolefile “C:\Program Files\Windows Azure Active Directory Sync\DirSyncConfigShell.psc1” -command “Start-OnlineCoexistenceSync”}

If you have new Azure Active Directory Sync (AAD sync) tool installed method above is not working. By the way AAD sync tool just released GA (http://blogs.technet.com/b/ad/archive/2014/09/16/azure-active-directory-sync-is-now-ga.aspx).

You have two methods availble that I know

1. Start Task scheduler and select AAD Sync task and press “Run”
AAD1

2. Naviagate to “C:\Program Files\Microsoft Azure AD Sync\Bin\” and launch
DirectorySyncClientCmd.exe

AAD2

I have created shortcut to desktop from DirectorySyncClient and MiisClient that I can launch sync faster and confirm the actual sync

AAD3