Is there a way to re-enable a mailbox on Exchange 2010 and Outlook 2010?

I have a user whom left and his mailbox was disabled, but over a month later he is coming back part time?   I have re-enabled his network account in AD, but when I go into Exchange Management Console I don't see him listed in disconnected mailboxes ?   I tried to go in and add a new mailbox but it says that it is still out there?    Should I disable his AD account first and then try the new mailbox?
Kim LevyaIT ManagerAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

FOXActive Directory/Exchange EngineerCommented:
FOXActive Directory/Exchange EngineerCommented:
Kim LevyaIT ManagerAuthor Commented:
Looked at both of those earlier and doesn't help due to the mailbox isn't showing up in disconnected mailboxes?  

When I initiate a search, his name doesn't even show up?

But when I go into Active Directory he is there, just not on exchange.
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

FOXActive Directory/Exchange EngineerCommented:
when you tried to add a new mailbox what was the actual error it threw?
Kim LevyaIT ManagerAuthor Commented:
I was able to add new mailbox and then clicked on existing user....added the credentials and then I was good to go.... YAY !!!    You helped me thanks, otherwise I wouldn't have gone back in  and tried to get the error !!!  
Kim LevyaIT ManagerAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for klevya's comment #a41145347

for the following reason:

Wouldn't have tried again would have still been looking out there!!!
FOXActive Directory/Exchange EngineerCommented:
you said I helped you but didn't award not one point to me.  Boo Klevya!!  :(

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Kim LevyaIT ManagerAuthor Commented:
Great job thanks !!

Is this all I do?
FOXActive Directory/Exchange EngineerCommented:
Yay Klevya!!!  yes you did it.  Thank you.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.