Domain Controller Upgrade

The recommended way to upgrade a domain is to promote domain controllers that run newer versions of windows server and demote the older domain controllers as needed.

Domain controller upgrade. Migrate first domain controllers. The recommended way to upgrade a domain is to promote domain controllers that run newer versions of windows server and demote older domain controllers as needed. Connect to a domain controller that doesn t own any fsmo roles.

If the upgrade of a lab environment that accurately mirrors the production forest performs smoothly you can expect similar results in production environments. Before you upgrade windows domain controllers to a production windows 2000 domain validate and refine your upgrade process in the lab. Open windows r and run winver to show os version.

For complex environments the lab environment must. Once a member server upgrade it to a domain controller and move the fsmo roles over to it and ensure it is also functioning as a dns server. Accept the license agreement and click on next.

This will show os version as 1809 ie server 2019 and build version as 17763 xx. Once upgrade process is completed you can login to domain controller. That method is preferable to upgrading the operating system of an existing domain controller.

Next choose whether download updates right now or not. Then enter the product key. Select the windows server 2019 edition you want core edition or not.

You should also select dns and gc roles for redundancy. That method is preferable to upgrading the operating system of an existing domain controller. Once verified dns and the fsmo roles are on the new 2012 r2 machine retire one of the server 2008 r2 machines and replace it with another server 2012 r2 machine.