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Outlook 2010 an encrypted connection to your mail server is not available. during migration to office 365

Posted on 2016-09-16
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Last Modified: 2016-09-22
I'm having a major issue to migrate to Office 365, at fist I was trying to use Outlook 2007 and got the same problem now I've installed Outlook 2010 and still having the same issue. Can someone try to help me.
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Question by:jdff
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LVL 17

Expert Comment

by:Todd Nelson
ID: 41802579
What are you migrating from ... Exchange, Hosted Exchange, other?  What method/tool are you using to migrate the mailboxes?

FYI... Office 2010 and older are not supported with Office 365.  They may work but are not supported.

Previous versions of Office, such as Office 2010 and Office 2007, may work with Office 365 with reduced functionality. Get more details about which Office versions are supported.

    - https://products.office.com/en-us/office-system-requirements/#Office365forBEG
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Author Comment

by:jdff
ID: 41802582
From a local exchange 2003 server.
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LVL 17

Expert Comment

by:Todd Nelson
ID: 41802585
How did you migrate the mailboxes from Exchange 2003 to Exchange Online?

Can you access the Exchange Online mailboxes from http://outlook.office365.com?
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LVL 17

Expert Comment

by:Ivan
ID: 41802929
Hi,

have you already managed to migrate mailboxes? If so, have you reconfigured DNS records?
Do you have problem connecting from inside your LAN and Outside as well?

Can you download trial of Office 2016 and try with it?
As Todd said, Outlook 2007 is not supported, and Outlook 2010 needs to have SP2 with hotfix KB2965295 and KB2956191.

Regards,
Ivan.
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Author Comment

by:jdff
ID: 41803047
Yes, office365 is configured and working fine, I can ping the autodiscover record without a problem from my lan. I have 3 computers that migrated just fine to office 365 some with Outlook 2007 and some with Outlook 2010, now I have 4 more computers that gives me the encryption message. I have download the assistant tool from Office 365 and it did not find anything. I'm sure this is not an autodiscover issue, this is something with the Outlook itself. It has to be, why the 3 computers connected just fine and others are not connecting.
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LVL 17

Expert Comment

by:Ivan
ID: 41803122
That is very strange, since Outlook 2007 is not supported. I have no idea why is it working in the first place..
As said, see if you have SP2 with those KB installed first.

Regards,
Ivan.
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Author Comment

by:jdff
ID: 41803174
Just installed SP2 on Office 2010 and still same message. Ive attached the crazy message, have no idea on what to do next.
Desctop-screenshot.png
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LVL 17

Expert Comment

by:Ivan
ID: 41803283
Do you have a license for Outlook 2013 or 2016?
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Accepted Solution

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jdff earned 0 total points
ID: 41803285
Problem solved guys, the Kaspersky antivirus was the culprit, as soon I've disabled it, it worked perfectly.
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LVL 15

Expert Comment

by:Edwin Hoffer
ID: 41804304
Hello user,
The connectivity error is very general. The error occur for different reasons. It is typically occurred because of following conditions:
1. Due to incorrect user name, password.
2. Correct Exchange online information for the user account s prevented.
3. Due to Network connectivity issues.

If these are correct then please check you Antivirus it must be restricting your Outlook to migrate.
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Author Closing Comment

by:jdff
ID: 41810372
Problem Solved
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