Can't connect Outlook 2016 to my O365 Mailbox
Scenario: I have an Office 365 account with the email foo@contoso.com I have an old MSA account with the email foo@contoso.com Windows 10 - Creators Update (but tried this with a fully patched version immediately before updating to Creators Update Outlook 2016 latest (installed from Office 365 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.
Add-ins in the new Outlook for Windows
The new Outlook for Windows brings a more consistent and robust experience with rapid access to new features. It also has some significant changes in how add-ins are handled. The article below outlines our approach and what admins need to know about add-ins in the new Outlook for Windows.Introducing Follow in inbox and other improvements for managing group emails in Outlook
The latest set of for Groups in Outlook introduces new ways to manage the group emails you receive in your inbox. These updates are, in large part, based on customer feedback about the Groups subscription model. That model has now been replaced with Follow in inbox.
