Get AD replication status and force replication

To get an overview of a DC that you suspect might not be replicating properly you can use the repadmin utility as below (this will let you know the sync status / time between other DC's in your AD infrastructure:

repadmin /showrel

Or you can force / invoke replication by using the following command (the command should be executed on the DC you have made changes on - the 'P' switches signifies 'Push'):

repadmin /syncall /AdeP