Hello, Never mind, I found the answer to it in some of my documentation. Thanks anyhow. Ken Over the weekend our PDC was demoted and removed (Physically as well and rebuilt) from the domain. I transferred over (what I thought was..) all of the rolls to keep the system going smooth, to another DC before the demotion. However, when I was taking a look at AD just now I realized that the ADC was still set up on the now deceased PCD. As the domain is running in W2K native mode, with DNS and AD functioning well on the other DC. I currently have two machines as DC's. The Exchange is E2K. The original PDC was put in when we were running Exchange 5.5 and therefore the reason that for the ADC. My question to anyone who can help is : Is it safe to remove the old PDC server container from AD as it still has the ADC container showing up in the sites and services for the old PDC. Any help is gratefully accepted! Thank you Ken