Can I do an offline PDC upgrade?

Regarding your previous tip, First things first with upgrades, I am planning to perform an in-place upgrade to AD, but the NT domain will be upgraded to the AD child domain. In my situation, can I do an offline PDC upgrade as the tip said?

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An offline upgrade can only be performed if the current PDC is configured as the head of the planned child domain. If you are going to re-arrange or re-configure your domain infrastructure, you can't perform a direct quick upgrade. You'll have to use the migration tools to store your user configuration info, then upgrade to 2000, demote to member server, then re-promote to a DC with the correct domain configuration, then re-import your config info (which may not work since the domain config will have changed). You should read this migration document.

This was first published in November 2003

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