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Albert WidjajaFlag for Australia

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What isthe effect of turning off Domain Controller 1 week before decommisisoning ?

People,

Before I'm doing the Windows Server 2003 decommissioning process, I'm thinking to turn it off for one week and see if there is any problem reported by some other application.

Is there any harm or potential issue when doing this way ?

The actual decommissioning process will be following the below steps:
Demoting Windows Server 2003 domain controller
      https://technet.microsoft.com/en-us/library/cc740017(v=WS.10).aspx

Note: before the DCPROMO process, I will leave it running for 2 hours to resolve the DC replication first and then begin the demotion.

ANy potential problem or pitfall please share it here.

THanks
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Yes, this old Server 2003 box dosn't run anything else as I have moved the roles into different server except DNS server role and the Domain Controller role.

so yes, once I turn it back on, I'll wait for few hours for the replication to stabilize and then perform DCPROMO, after that I will stop the DNS services then shut it down for another week.

is that the correct plan for decommisioning old DC ?
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ok, so after the decommissioning of the DC, the AD sites and services will be automatically recalculated and then recreated in between the AD sites to avoid AD replication issues ?

is that correct or do I need to create manual conenction in the AD sites and recovery before I decommission this old DC to make sure the new replacement DC can talk to the Data Centre domain controller ?
Ok I've just found out one issue here.

The user account that I've created in the new Domain controller in the HQ office does not replicated to the Data Center Domain Controllers used by Exchange servers.

This is happening after turning off one very old DC, so how can I recreate the replication link in AD sites and Services safely ?
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Thanks !