Microsoft changing how Outlook connects to Office 365

By August 25, 2017QCS Group Blog
Microsoft recently announced an upcoming change to their Office 365 (Exchange Online) service that could result in some Outlook users not being able to connect to their mailboxes. We want to make sure our customers are aware of this so that you can prepare yourselves.

Overview

This Microsoft update will impact any user who is using Office 365 and Outlook.

If you have Office 2010/2013 installed you need all the latest Office updates installed otherwise Office 365 will no longer work.

The changes will affect all Outlook users who are not using a 2016 version to connect to an Office 365 mailbox.  The announcement states that the protocol previously used by Outlook 2007, 2010, and 2013 to connect with Office 365 will no longer be supported by Office 365 after October 31, 2017.

Microsoft support article – RPC over HTTP deprecated in Office 365 on October 31, 2017

What this change means for…

Outlook 2007 users

Users of Outlook 2007 will not be able to connect to Office 365 beyond October 31. They will therefore need to upgrade to a newer version of Outlook.

Outlook 2010 users

Outlook 2010 will only be able to connect to Office 365 beyond October 31 if updates have been installed to meet or exceed build number 14.0.7164.5002.

Install this update as a minimum Outlook 2010

Also important, Microsoft mainstream support for Outlook 2010 has expired.

Outlook 2013 users

Outlook 2013 will only be able to connect to Office 365 beyond October 31 if updates have been installed to meet or exceed build number 15.0.4779.1002.

Install this update as a minimum Outlook 2013

Here’s what to do if you are using Office 365

Verify Outlook versions and build numbers

  • Microsoft support article – What version of Outlook do I have?
  • Most organisations run multiple versions of Outlook, so it’s worth the time to check every user.
  • Notify QCS of any required help

Unclear what your business needs to do in the face of these changes to Office 365? The experts at QCS Group can help you understand what steps you should be taking.

Contact us on 1300 858 723 or use the contact form for more information.

Call Us
Email Us