Outlook 2013 not displaying Presence information

Windows 7 (64-bit)
Office 2013 (32-bit)
Office Communicator 2007 (32-bit)
Office Communication Server 2007

Hey everyone, we are having trouble with presence being displayed when using Outlook 2013.
I have some users that are affected, others that are not. So it's a little hard to troubleshoot.

Does anyone have any ideas where we could start troubleshooting?

I know we installed two new Hybrid CAS servers so we can start migrating user mailboxes to O365, but the connectors have yet to be established as we wait on a NLB to be installed.

Would OCS 2007 or the OC Client be looking at a Virtual Directory on the new Hybris CAS servers perhaps for free/busy, while all mailboxes are still on premises?  

Thanks in advance.
Christian HansUndecided... Asked:
Who is Participating?

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

x
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.

Amit KumarCommented:
Please follow this article to integrate Outlook 2013 with OCS 2007

Registry info from above link:

[HKEY_CURRENT_USER\Software\IM Providers]
"DefaultIMApp"="Communicator"

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
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
Office Suites-Other

From novice to tech pro — start learning today.