Run AAD Connect Sync & Monitor Status

Depending on the size of an AD environment (and more specifically, the number and location of objects that are in scope to be synced), a delta sync can take anywhere between a couple of seconds and significantly longer.

Checking if a sync currently is running is possible using a couple of methods. When sticking to PowerShell, the following commands can be utilized:

Start-AdSyncSyncCycle: running this command interactively when a sync is running will result in an “in your face” error message similar to the following:

Get-AdSyncScheduler: this command outputs the configuration settings of the sync process and also includes the state, wether or not it is running:

While all of the above are usable, they are not that user friendly, and require a user to retry the command in order to know *when* sync has been completed.

The below PowerShell code (let’s not call it a script, shall we?) does the following things:

  • Checks if a sync process currently is running
  • If not, starts a delta sync
  • Notifies the user / admin when the delta sync is finished
# verify if ADSync module is loaded, and if not, load it.
$module = Get-Module "ADsync"
if ($module -eq $null)
Import-Module AdSync
    Write-Host "ADSync Module already loaded"

# verify if a sync is currently running. If not, start a delta sync
$sync = Get-AdSyncScheduler

if ($sync.SyncCycleInProgress -eq $False)
Start-AdSyncSyncCycle -Policytype "Delta" |Out-Null

# periodically test if sync is running until it's... not running anymore
do {
    Write-Host "Azure AD Connect Sync Cycle in Progress..." -ForegroundColor "Yellow"
    $sync = Get-AdSyncScheduler
} until ($sync.SyncCycleInProgress -eq $False)

Write-Host "Azure AD Connect Sync Cycle is finished." -ForegroundColor "Green"

Jente Paredis

Jente Paredis

I am an experienced architect with a strong focus on Security, Identity & Productivity Solutions . I specialize in Azure AD, M365, and Azure Infrastructure Solutions. Throughout my professional career, I have had the pleasure to work with bright-minded people. I care deeply about both People and Technology.


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