We are migrating away from an old Windows 2003 domain controller, and moving to a Windows 2012 R2 domain controller. However, there are a few issues I need to clear up due to the configuration of the original domain controller.
We would like to remove the .local suffix on our domain, and use a real domain that we own instead, since this is no longer best practice (and is actually bad practice IIRC). However, the question I have is this;
Would it be better to
- rename the domain first, then migrate,
- migrate, then rename the domain, or
- rebuild the (new) domain from scratch and then import/recreate the users?
We have Office 365 with synced login credentials, so the users cannot be simply recreated on the new domain without re-associating all of the Office 365 accounts again (not out of the question though).