Can't get Outlook 2016 to connect to Office 365, formerly using SBS 2008 with Outlook 2010 or 2013

We are performing a manual cutover from SBS 2008 (Exch 2007) to Office 365.  We have all the email accounts backed up and Office 365 (with Outlook 2016) is installed, but we can't get the mailboxes / accounts setup in Outlook 2016.  When we try to create a new Outlook profile, it is still finding or seeing the local Exch 2007, but I want Outlook 2016 to use the new external Office 365 settings. It's like the PC is remembering or knows that SBS Exch 2007 still exists, and so is using those settings, and not even trying to look externally for the email hosted O365 server settings. I think I have the DNS, SRV, MX records correct for Office 365 & domain.  How can I force the PCs to NOT use the local SBS or local autodiscover records??
DNS.PNG
StewartTechnologiesIT ConsultantAsked:
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Damien KayCommented:
You have one more command to run using Powershell on the old E2K7 server... You want to set the  local Client Access Server to Null:

Set-ClientAccessServer -Identity "SBSServerName" -AutoDiscoverServiceInternalUri $NULL

See:  http://365command.com/autodiscover-service-and-how-to-disable-it-on-premises-justins-tech-tip-of-the-week/

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StewartTechnologiesIT ConsultantAuthor Commented:
Thanks for your reply.  This is helpful info, and I've been able to get a few key accounts setup after making this alteration.

But.... I discovered there are a few 'other' accounts that were not backed up.  So, I basically need to undo the above powershell command, to revert back to the previous settings, just long enough to backup these other email accounts. Then, I will re-run the powershell command for the long term config.  (Long enough until Exch 2007 is officially retired.)

Thanks for your insight.
Damien KayCommented:
I found out the hard way that Outlook 2016 does not let you setup a manual Exchange Account, as you could in all previous versions.  But rather than "undo" my Autodiscover settings I used a PC with Office 2013, created a manual profile pointing to the SBS server, and then exported what I needed to a PST.  Worked like a charm!
StewartTechnologiesIT ConsultantAuthor Commented:
Thanks for your inputs.  Both posts allowed us to move forward.  Appreciated.
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