Titan,
I performed all five steps, & the issue still persists.
On another machine in this same lab, with the same issue,
to rule out accounts, I went to that machine and erased all accounts,
and created a new Admin account.
Logged in as that user, and the issue still occurs:
When trying login to the server via afp at afp://fqdn
it tries to "auto login" into a share with credentials it no longer has
(you cannot login to the share 'xxxx' because you do not have privileges to do so)
What it needs to do is present the proper login screen, so that new credentials
( name and password) can be entered to access the new share.
that window never comes up; it isntead tries to "auto login" with credentials
it stored SOMEWHERE, for an old share.
At this point, I'm going to try re-installing the system folder ( w/ Archive and Install)
as I've ruled out it's not in a user account that is causing the issue, but the system itself,
as by my new test above.