<p>The following instructions will show you how to force an Active Directory AD sync or synchronization between the two domain controllers within Server 2012 R2 domain environment.</p>
<p>One of the ways is to open Active Directory Sites and Services (Administration Tools)</p>
<p>From the left pane navigate to:</p>
<p><strong>Default-First-Site-Name (or whatever you called your site name) | Servers | %DC Name% | NTDS Settings</strong></p>
<p>Choose one of the following options:</p>
<p><em>Replicate configuration from the selected DC</em><br />
<em>Replicate configuration to the selected DC</em></p>
<p><a href="https://www.wincert.net/wp-content/uploads/2016/02/ad-sync.png" rel="attachment wp-att-1684"><img class="alignnone size-full wp-image-1684" src="https://www.wincert.net/wp-content/uploads/2016/02/ad-sync.png" alt="ad sync" width="537" height="231" /></a></p>
<p>Another way is to run the following command from an elevated command prompt or Powershell (run as admin) on one of the Domain Controllers:</p>
<p><strong>repadmin /syncall</strong></p>
<p>This command will sync the current DC (the one from which you ran the command) with other DC partners.</p>

Force AD sync with Windows Server 2012 R2 domain
