Outlook 2016 / 2019 / 365 Security Update for October 2018

A Security Update has been released for Outlook 2016 Retail, Outlook 2019 and Office 365. It provides “enhanced security as a defense in depth measure” as described in ADV180026 and is not related to a known security vulnerability.

Based on your release channel, you’ll be updated to the following version;

  • Office 365, Outlook 2016 Retail, Outlook 2019 Retail
    Version 1809 (Build 10827.20150)
  • Outlook 2019 Volume License
    Version 1808 (Build 10337.20021)
  • Office 365 Semi Annual Channel
    Version 1803 (Build 9126.2295)

Note: Depending on your installation type, this update can be installed via the Microsoft Store or the Update Now button in Outlook itself. This update does not apply to msi-based installation of Office 2016.