I have an issue with employee who is re-hired, and when they login to Lync usign the full client, the get an error that their account is not correct.

They can login into OWA and use Lync as well as our Legacy CWA site.

Known

Their old account is still in Active Directory, not mail enabled or found when searching in the Lync control panel.

Their new account would have gotten the same Email & SIP addresses that the old account used to have.

I am told by the Active Diretory team that the users old account was removed from Lync before the Mailbox was removed. but that cant be verified.

Any thoughts?

Thanks for your question. This forum is focused on development with the Lync client API. It looks like you are asking a question about the Lync client itself, and so I will attempt to direct you to the appropriate forum on TechNet.

Did you enable the old AD user again? And you cant sign in?

What did you mean by the sentence They can login into OWA and use Lync as well as our Legacy CWA site?

Please try to have you client logging enabled and post the log information.

Did you enable the old AD user again? And you cant sign in?

No, the old user account is still in the Disabled User OU, with no mailbox or Lync connection.  The user received a net new account, but did receive the same primary email address her old acocunt would have had, which means she would have received the SIP address her old account had as well.

What did you mean by the sentence They can login into OWA and use Lync as well as our Legacy CWA site?

We have Lync OWA integration, so when you login to the OWA site for our Exchange 2010 system, you have limited Lync functionality.  We also have a legacy OCS system with the CWA portal still up for our remaining 2003 Exchange users to use since they cant use the new OWA site for Exchange 2010 wit hthe integration.

I also forgot to mention that when the new account is enabled for Lync, and receives the original SIP address of the old account, and you login to the OWA or CWA site, The user sees their old contact list from the original acocunt.

So I believe that somewhere in AD, that SIP address is still tied to the old account, but does not have full functionality since they cannot login to the full Lync client.

If I assign a new SIP address to the new account, it works fine and the contact list is blank.

I looked at the old user accoutn using ADSIedit, and could not really find any reference o the SIP address in question.

I forgot to add that if I remove Lync from the new account, mail enable the old account, and enable it for Lync, it works fine, and contains the users contact list before she left the company.