Apr 19 2017 01:28 PM
Scenario:
In the past, I had no problem with this.
I login to Windows 10 with my MSA account. Within Windows 10 => Settings => Accounts, I see my MSA account listed as "Outlook" and can firm it's using a Hotmail server to sync.
When I try to add another account in Windows 10 for Exchange using the same email, it tells me that email is already in use.
When I try to add my Office 365 account to Outlook, it constantly rejects the credentials I enter. Instead, it re-prompts me to enter the credentials... except it autofills my email as "MicrosoftAccount\foo@contoso.com".
No matter if I use my Office 365 (Azure AD) password with what's provided or if I remove "MicrosoftAccount\" from the email address, Outlook refuses to connect to it.
The behavior is that because I'm using the same email, Outlook now assumes it's an MSA account and refuses to use the domain with the autodiscovery DNS entry for my domain to resolve to O365 Exchange servers to lookup the account.
The result: I can't use Outlook 2016 for my Office 365 email.
This was not the case in the past. I rebuilt the same machine in September 2016 and had no problem with this same setup. So something changed in Windows 10 / Outlook 2016 to impact this.
Apr 19 2017 01:58 PM
Probably something new with the Creators update. I havent updated to it yet, so I cannot test to see if I can reproduce. In any case, I'd advise removing the alias from your MSA, there are all kinds of other issues you will run into. Microsoft has finally decided to pull the plug on this type of configuration, in case you missed it: https://blogs.technet.microsoft.com/enterprisemobility/2016/09/15/cleaning-up-the-azure-ad-and-micro...
Apr 19 2017 02:08 PM
Apr 29 2017 09:33 PM
Try changing the autofilled email from "MicrosoftAccount\foo@contoso.com" to "contoso.com\foo@contoso.com" and see if that works.
Apr 30 2017 02:17 AM
Apr 30 2017 05:37 AM
I had the same problem. It is due to having the same username for O365 and MSA.
My advice is to change the username for the MSA: I have had no problems anymore.
It is actually very simple: see https://www.howtogeek.com/277170/how-to-change-the-primary-email-address-for-your-microsoft-account/
Hope it helps...
Apr 30 2017 05:42 AM
Apr 30 2017 06:00 AM
Andrew, I think instead that it is very well worth.
Here is why:
Try it.
Just my two cents...
Apr 30 2017 06:23 AM
Jul 19 2017 02:34 AM
I had the same problem.
I my case it seemed to be related to two-factor auth being enabled in O365.
Fixed it by temporarily (only while setting up the account in OL2016) disabling 2FA.
Sep 22 2017 12:04 PM
How long did you have to wait for the disable of MFA to take place?
Sep 22 2017 12:53 PM
As far as I remember disabling/enabling was effective immediately.
Oct 20 2017 11:18 AM
I will confirm that it was 2fa that was blocking my sign in also, once I disabled it, it went through first time although still took about 3 minutes to set up the account.
Nov 03 2017 10:42 PM
Mar 13 2018 01:03 PM
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Apr 13 2018 03:33 AM