Lync Basic 2013 Outlook Integration error

We are using OCS 2007R2 server with OCs clients.  We are in the middle of migrating users to Office 365.  We plan to deploy LYNC Online in the cloud after we migrate all the users.  However we have noticed that after users get migrated to 365 they cans till use OCS but their Presence for going to meetings is gone.  There is an Outlook integration error.  We  tried deploying Lync Basic to a few users already migrated to 365 but they get integration error as well.  Lync Basic is pointing to OCS.  Any ideas besides having to do Lync Online right now to get this configuration to work so users can Search for people and have presence?

Thanks
Twhite0909Asked:
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Vasil Michev (MVP)Commented:
With 2013, it's all about the integration between Lync and Exchange. So you need to clarify what you mean by 'migrated to O365', do they have mailboxes as well, have the mailboxes been migrated to EO, etc. Check the configuration info in the Lync client (hold CTRL and right-click on the tray icon) and see if the client is able to connect to EO, ie get the EWS URLs, etc. Also check if something on your end is not blocking the access to said URLs.

Also, what's the Outlook version? Microsoft really wants you to use the 'latest and greatest' when it comes to O365, so many features will not be available even with 2010 clients. You need to also make sure that the default Outlook profile matches the Lync profile. Best option is to test with the Lync client integrated into OWA.
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Twhite0909Author Commented:
I think were just going to Migrate to LYNC online first and do the mailbox migration to 365 after
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Twhite0909Author Commented:
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