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Issue with at least one mailbox after Exchange migration

I am in the process of moving mailboxes from our old server which is exchange 2010 to our new server which is 2016.

I tested it out with one mailbox first. I created an outlook account on a offsite computer. I then moved the 1 mailbox and tested outlook after the move. Works fine.

I moved our first batch of 10 users tonight. Outlook will not connect to at least one user. I tried creating a new outlook profile for this one user but I get a message saying an encrypted connection cannot be made to the server. The original user I moved as a test is still working fine. OWA works fine for the user that I cannot get to work in outlook. How can one user work fine and one not ?
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WiddleAvi
Asked:
WiddleAvi
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1 Solution
 
WiddleAviAuthor Commented:
One note. I ran the Microsoft remote connectivity analyzer and it passed with warnings
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WiddleAviAuthor Commented:
One more thing - In outlook from a computer offsite I ran the test Email autoconfiguration tool and it works for one user but fails for another. How is that even possible ?
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Todd NelsonSystems EngineerCommented:
I experienced the same issue.  Try this... https://oddytee.wordpress.com/2016/08/16/outlook-client-does-not-connect-to-mailbox-on-exchange-2016/

Restarting the Autodiscover App Pool on the Exchange 2016 server helped to resolve my problem.
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WiddleAviAuthor Commented:
You are a miracle worker my friend !! Thank you !!
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