Hi guys, I have two domain exchange servers in my domain. One of the servers is not configured well and I want to rectify it. So I try to uninstall exchange from one of the servers so that it will no more be registered in active directory. For some funny reason the exchange was not well uninstalled from the second machine, but when I restart the first machine and open the system manager icon to check for the servers that are hosting exchange the second server was not registered there. Now when I try to install exchange on another machine I get this error message The component âMicrosoft Exchange messaging and collaboration servicesâ cannot be assigned the action install because - - - Active Directory has not replicated all the necessary permissions for the deleted items container. Please wait until replication completes before running setup. I have restarted the domain controller and I have waited for up to 5 hours but yet still I get this error message. Please could anyone advice on what could be done. Thanks