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If a trust is not an option then a full migration is needed.<br />
Which is quite easy (but of course takes an hour or two ;-) ) with the tools that are available...
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If a trust is not an option then a full migration is needed.
Which is quite easy (but of course takes an hour or two ;-) ) with the tools that are available...

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We have a number of domains in their own forests. We want to consolidate to a single forest. Is there a non-destructive way to join an existing domain to a new forest?
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We have a number of domains in their own forests. We want to consolidate to a single forest. Is there a non-destructive way to join an existing domain to a new forest?

join an existing domain to a new forest

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.