Can‘t log in after installing Mac OS X 10.2 over 10.3

You may not be able to log in to Mac OS X 10.2 if you perform an Archive and Install installation over Mac OS X 10.3 Panther.
This article has been archived and is no longer updated by Apple.
This can happen if you chose to preserve user and network settings during the Mac OS X 10.2 installation.

To fix this, either reinstall Mac OS X 10.3 Panther, or perform another Mac OS X 10.2 Archive and Install installation but do not preserve user and network settings.

Usually, it's best to use the most current version of Mac OS X instead of an earlier version.
Published Date: Oct 11, 2016