O365 – MAPI over HTTP Support & AD Connect Notices

Potential service disruption for Outlook for Windows users

On October 31st, 2017, Exchange Online mailboxes in Office 365 will require connections from Outlook for Windows use MAPI over HTTP, our new method of connectivity and transport between Outlook for Windows and Exchange.

In May of 2014, Microsoft introduced MAPI over HTTP as a replacement for RPC over HTTP. RPC over HTTP was a legacy connection protocol that is being deprecated from Exchange Online.

[How does this affect me?]
Beginning October 31, 2017, Outlook for Windows clients using RPC over HTTP will be unable to access their Exchange Online mailbox.

[What do I need to do to prepare for this change?]
The necessary action depends on the version of Outlook in use in your organization.

If you are using Outlook 2007 or earlier, you need to upgrade. Outlook 2007 does not contain support for the MAPI/HTTP protocol. We encourage you to update to the Office 365 ProPlus subscription, or access Outlook via the web browser (which is included in your current subscription plan).

Outlook 2010-2016 customers will need to ensure their version of Outlook for Windows is set up to support MAPI/HTTP. At a minimum, you should ensure you have installed the December 2015 update.

Lastly, ensure your Outlook clients are not using a registry key to block MAPI/HTTP.

We are replacing Windows Azure Active Directory Synchronization (“DirSync”) with Azure AD Connect in Office 365

Azure Active Directory (AD) Connect is the best way to connect your on-premises directory with Azure AD and Office 365. Azure AD Connect is replacing DirSync and Azure AD Sync and these two older sync engines are deprecated from April 13, 2016 reaching end of support April 13, 2017.

You are receiving this message because you are using DirSync, Azure AD Sync, or an Azure AD Connect installation released before 2016.

[How does this affect me?]
After April 13, 2017 you will no longer be able to open a support case without first upgrading to Azure AD Connect.

[What do I need to do to prepare for this change?]
You should upgrade your sync engine to Azure Active Directory Connect.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s