Outlook 2016

For those on the Fast ring of the Office Insider Program for Outlook 2016 for Mac, Microsoft has released a fast ring build and is now available for download on your Mac.

Office Insider builds for are updated on a regular basis to provide new or improved features, security updates and bug fixes.

August 16, 2017, release

Version: 15.38 (170815)

New or improved features:

  • Improved app stability
  • Enabled Join/Leave Groups from Groups Contact Card
  • Improved keyboard and VoiceOver navigation on Calendar module
  • Room finder list now displays rooms in alphabetical order
  • Supported ICS file in UTF-8 BOM (Byte Order Mark)


  • Fixed a mailbox sync issue when you add a Shared Mailbox that has a higher Exchange versions than the primary mailbox
  • Fixed Exchange account authentication issue due to timezone, particularly On-Premise Exchange Mailboxes. Now exchange account can be added with the valid credential
  • Fixed a issue where dismissed reminders keep coming back (on other Outlook endpoints)

Known issues:

  • No known issues at this time.

If you are on Mac and want to get new features before anyone else does, learn how to install Office for Mac updates