Outlook 2016 for Mac – Release notes for Insider Fast builds

Insider builds for Office 2016 for Mac are updated on a regular basis to provide new or improved features, security updates and bug fixes.  To see similar information about other Office for Mac apps, go to Release notes for Insider Fast builds of Office 2016 for Mac.

Learn how to install Office for Mac updates, and check out the information below to learn about each Insider Fast release. 

February 14, 2018 release

Version: 16.11 (180214)

New or improved features:

  • Improved People experience: the contact card has been redesigned to put your contacts' key details front and center. Click on any name in your messages or events to access email and IM addresses, phone numbers, and other details, such as organization chart. Requires activation via Office 365 subscription. Learn more in our People article posted on the Outlook Blog. 

  • Display second time zone: add a second time zone to the calendar grid to easily view your current time alongside a second time zone. To display a second time zone, go to Outlook Preferences > Calendar or context menu in the calendar grid. Requires activation via Office 365 subscription. Learn more in our Calendar article posted on the Outlook Blog.  

  • Set start and end time zone: schedule events with start and end times in different time zones, such as flights spanning time zones. Simply toggle "Time Zone" in the Ribbon or top Meeting menu to view time zone drop downs

  • Swipe gesture customization: choose your message actions when swiping left and right on the Trackpad in the message list. Available actions include Delete, Archive, Mark as Read, Flag, and None, which disables the gesture. Requires activation via Office 365 subscription. Learn more in our Swipe Gestures article posted on the Outlook blog. 

Fixes:

  • Compose: "Replace text as you type" AutoCorrect preference will now remain disabled after restart

  • Calendar: invitations can now be declined when no response has been requested by the organizer

  • Search: results are no longer cleared after clicking on search criteria options and then pressing return 

  • Online Archive: recipients are now properly displayed in the header for messages in the Online Archive

  • Keyboard navigation: now use Shift-F10 shortcut to display context menu throughout the app

Known issues:

  • No known issues in this update

Version: 16.11 (180206)

Fixes:

  • Groups: improved labeling of guests during create group experience

New or improved features:

  • No new or improved features in this update

Known issues:

  • No known issues in this update

Version: 16.11 (180205)

Fixes:

  • Mail: attachments are no longer dropped when forwarding messages received from Apple Mail users

  • Mail: improved app quit performance for IMAP setting to permanently delete messages in Trash on quit

  • Mail: window no longer expands beyond the viewable screen when expanding the full list of recipients in the message header and there are too many to fit

  • Calendar: added menu items for Next and Previous Day/Week/Month actions in the top View menu, tied to existing keyboard shortcuts (Command-Right Arrow and Command-Left Arrow, respectively) 

New or improved features:

  • No new or improved features in this update

Known issues:

  • No known issues in this update

Version: 16.11 (180130)

New or improved features:

  • Google IMAP accounts now use OAuth for authentication via web browser-based sign-in. Refer to our blog post for more details. Benefits include:

    • No longer need to set "Allow less secure apps" for account

    • No longer need app password when 2-Step Verification is enabled

Fixes:

  • Mail: badge count on the Outlook icon in the Dock for unread messages no longer includes unread count from delegated mailboxes

  • Mail: main window no longer expands beyond the viewable screen when receiving certain meeting responses

  • Mail: now able to scroll up and down properly when viewing certain messages where the view was getting stuck

  • Rules: improved error handling when deleting and editing server rules

  • Rules: improved moving of messages when creating server rules via "Move Messages..." menu item

Known issues:

  • No known issues in this update

Version: 16.10 (180124)

Fixes:

  • Rules: improved error handling when editing server rules in Outlook for Windows followed by Mac

New or improved features:

  • No new or improved features in this update

Known issues:

  • No known issues in this update

Version: 16.10 (180120)

Fixes:

  • Google Accounts: files attached from Drive File Stream can now be properly viewed by recipients

  • Delegation: messages sent on behalf of delegates are now displayed as "[Principal] on behalf of [Delegate]"

  • Meeting invitations: calendar grid preview in the invitation is no longer stretched

  • Meeting invitations: window will now close after responding with accept/tentative decline action

New or improved features:

  • No new or improved features in this update

Known issues:

  • No known issues in this update

Version: 16.10 (180114)

Fixes:

  • App stability improvements

New or improved features:

  • We now support Single Sign-On for Office Add-Ins Ver. 1.6

Known issues:

  • No known issues in this update

Version: 16.10 (180109)

Fixes:

  • Fixed the "Show Reply" button, where it was not showing up for some account types

  • Fixed a translation bug in the Calendar, for the Finnish language

  • App stability improvements

New or improved features:

  • Search results are now highlighted in the message list and the preview pane. This feature is slowly being rolled out to Insider Fast. See blog post for details

Known issues:

  • No known issues in this update

Version: 16.10 (180102)

Fixes:

  • App stability improvements

New or improved features:

  • The ability to create Office 365 Groups is now in Insider Fast, please refer to this blog post

Known issues:

  • On non-English builds, zoom settings for new emails is not maintained after upgrading

  • Blank screen or error message when adding certain Office 365 accounts

  • Issues with cut/paste text on plain text messages being compressed into one line

Version: 16.9 (171226)

Fixes:

  • Fixed an issue that English labels are shown on the Ribbon in non-English version of Outlook.

  • Fixed an issue that "Mark All As Read" from right click on Favorited Inbox Folder does not work

New or improved features:

  • Improve keyboard navigation between folder pane, item list, and the preview pane in Mail module.

Known issues:

  • No known issues in this update

Version: 16.9 (171219)

Fixes:

  • Fixed an issue that reminders cannot be dismissed with calendar events in Google account

New or improved features:

  • No new or improved features in this update

Known issues:

  • English labels are shown on the Ribbon in non-English version of Outlook. We are working to address this localization issue and this will be fixed in next release.

Version: 16.9 (171217)

Fixes:

  • Fixed date translation in calendar module in Finnish

  • Fixed an issue which attachment gets removed when switch the from address in email compose 

  • App stability improvements

New or improved features:

  • Keyboard navigation improvements on Search People window and email compose window

  • Better error message when Outlook runs into offline errors when sending emails with Right Management (RMS or IRM)

Known issues:

  • No known issues in this update

Version: 16.9 (171212)

Fixes:

  • Improve app stability

New or improved features:

  • Table Support in email compose is now released to InsiderFast, please refer to this blog post 

Known issues:

  • No known issues in this update

Version: 16.9 (171210)

Fixes:

  • Improve app stability

New or improved features:

  • Gallatin O365 accounts will be routed automatically to Gallatin specific Authentication page for email account set up and mailbox connection

  • Add-in pane will be consistently shown on the side as you switch email preview

  • Cancelled event will not trigger any reminders

Known issues:

  • No known issues in this update

Version: 16.9 (171206)

Fixes:

  • Fixed a hang issue when loading large emails with HTML formatting.

  • Fixed an issue with selecting the right Kerberos account for Kerberos authentication

  • Fixed an issue about tokenizing a list of comma separated emails address in the To: field.

  • Fixed a bug where inline images show up as blank on email reply

  • Improve app stability

New or improved features:

  • Improved new account configuration flow for some well-known domains IMAP accounts.

  • Improved keyboard navigation through events on the Calendar grid when multiple calendars are selected.

  • Improved Skype for Business phone and access code generation for quicker dial-in.

Known issues:

  • No known issues in this update

Version: 16.9 (171129)

Fixes:

  • Fixed a crash when closing the calendar window after searching in calendar.

  • Improve app stability

New or improved features:

  • No new or improved features in this update

Known issues:

  • If you experience crash, please save the details by copying and saving the logs from "More Information" in Microsoft Error Reporting window and report the issue via Contact Support (Outlook menu> Help> Contact Support). If you have difficulties launching Outlook, please report through Insiders Forum.

Version: 16.8 (171126)

Fixes:

  • "Mark as Complete" now works from Ribbon, top Message menu, and context menu (fixing known issue from last update)

  • Messages can now be sent when one of the recipients is a contact copied from a contact list

  • "View in Calendar" button in travel reservation and package delivery summary now focuses on the correct event in the calendar

  • When using VoiceOver VO-Shift-M command, context menu now appears for selected event in the calendar grid

New or improved features:

  • No new or improved features in this update

Known issues:

  • No known issues in this update  

Version: 16.8 (171114)

Known issues:

  • "Mark as Complete" does not work from Ribbon or context menu. Nevertheless, you can still mark email items as completed from the message list controls

New or improved features:

  • Accessibility improvements:

    • VoiceOver on search field now announces number of search results returned. Also, in Advanced Search, search criteria is announced

    • VoiceOver on status bar (at the bottom) now announces sync error and support notifications

Fixes:

  • Improved app stability 

Version: 16.8 (171111)

New or improved features:

  • Inbox Zero banners: reach zero items in a folder to view a friendly, inspirational message

Fixes:

  • Inbox and other folders now sync properly (fixing known issue from last update)

  • When searching in calendar, list view now properly updates with results

  • Message preview is no longer clipped in mail list

  • When creating a new event in calendar view, the newly-created event is now selected in the grid after saving/sending

Known issues:

  • No known issues in this update 

Version: 16.8 (171107)

Known issue:

  • Inbox or other folders may not sync properly in certain scenarios; fix is expected in the next update; Empty Cache for folder can be used to display new mail as a workaround

Fixes:

  • When composing new mail, replying, or forwarding, text typed immediately after opening the window is now properly displayed

  • Mail sent from IMAP accounts is now displayed in Sent folder in All Accounts

  • Folders in All Accounts now display mail from shared mailboxes

New or improved features:

  • No new or improved features in this update

Version: 16.8 (171101)

New or improved features:

  • Repeat from November 1, 2017 release: OneNote integration: Send mail and meetings to OneNote; see blog post for details (Office 365 subscription required)

Fixes:

  • Typing characters with accents in mail or event body when composing no longer results in Outlook becoming unresponsive 

  • Floating windows, such as autocomplete when composing and weather in calendar, now have darker borders when using "Increase contrast" setting in macOS System Preferences > Accessibility > Display

Known issues:

  • No known issues in this update 

Version: 16.7 (171029)

New or improved features:

  • OneNote integration: Send mail and meetings to OneNote, allowing you to archive and access your Outlook content where and when you need it; see blog post for details (Office 365 subscription required)

Fixes:

  • Text size in mail body in Reading Pane no longer appears smaller or larger after launching Outlook

  • When an Online Meeting is created for an event, "Join by Phone" links now include access codes, so they no longer have to be manually entered when joining by phone

  • Week numbers displayed in calendar grid month view and mini-calendar in sidebar now match, even when "First day of week" preference in Outlook > Calendar doesn't match "First day of week" preference in System Preferences > Language & Region

  • In Out of Office (Auto-reply Settings), VoiceOver focus no longer enters reply settings for an account when "Send automatic replies for account..." isn't checked

  • When creating or viewing an event, opening Room Finder in Scheduling assistant no longer switches the view back to Appointment (event header and body)

  • Groups now displays between Sent and Trash folders in Mail sidebar (Office 365 accounts with Groups)

Known issues:

  • No known issues in this update 

Version: 16.7 (171020)

Fixes:

  • Outlook no longer crashes when replying or forwarding mail containing missing embedded images (displaying as '?' in the mail body)

  • When opening a new mail or event compose window, focus is now placed in the To: field instead of the mail or event body

  • Google accounts: Mail with attachments are now properly badged with attachment icons in the mail list

  • Google accounts: After dismissing reminders for events that are part of a series, the reminder will remain dismissed

New or improved features:

  • No new or improved features in this update

Known issues:

  • No known issues in this update 

Version: 16.7 (171017)

New or improved features:

  • Resize text in Mail: Increase or decrease text size in the Mail sidebar, mail list, and reading pane using the slider control in Fonts preferences

  • Improved VoiceOver support in Calendar: Navigate between days in the Calendar grid and interact with specific days to navigate between events in those days; interact with the mini-calendar control in the sidebar to select specific weeks or days in the grid

Fixes:

  • Images in signatures are now displayed in sent mail (fixing known issue from last update)

  • When adding online meeting details to an event, a link for "Try Skype Web App" is now included

  • Encrypted mail in Online Archive folders is now properly displayed

  • Default font color for replies and forwards can now be changed in Fonts preferences

  • Added menu item for Scheduling to the Meeting menu to toggle Scheduling Assistant pane 

Known issues:

  • No known issues in this update 

Updated October 13, 2017 with highlight flagged mail under "New or improved features"

Version: 16.7 (171008)

Known issue:

  • Images in signatures aren't displayed in sent mail. A fix is expected in the next update. One workaround is to create the signature in Word and then copy and paste it to the message body when composing

New or improved features:

  • Highlight flagged mail: It's back! Mail flagged for follow-up is highlighted pale yellow in the mail list

  • Google accounts: Appointments can now be moved or copied from Google calendars to Outlook.com, Office 365, and Exchange calendars

Fixes:

  • Office 365 sign-in or keychain access prompts are no longer displayed on first launch (fixing known issue from last update)

  • Outlook no longer crashes when attempting to send mail (fixing known issue from last update)

  • Account name is appended in the window title of mail and events when composing to help indicate From: account

  • When deleting a meeting that is already canceled or in the past, Outlook no longer prompts to notify the organizer

  • Buttons in the Reminder window are now in the keyboard tab order and can be pressed with spacebar key

  • Outlook no longer attempts to connect to Google accounts when working offline or not connected to the network

  • When working offline, Outlook no longer attempts to download contact photos for Office 365 and Exchange accounts

  • When sending mail with command-return shortcut, VoiceOver now announces mail was sent

  • When pressing "show all messages in this conversation" button in the message header, VoiceOver focus is now placed in the conversation index

  • Count of search results in the Search People (Address Book) window now displays properly

  • Added menu item for Room Finder to the Meeting menu

  • Spacebar key can now be used to select available rooms in Room Finder

  • Context menu for folders in the sidebar in non-Mail views now displays

Last updated Oct 4

Version: 16.6 (171001)

Known issues:

  • Office 365 sign-in or keychain access prompt on first launch for some users 

  • Signature images do not show up properly on sent mail. We are actively working on a fix. One possible workaround is to create the signature in Word and then copy and paste the signature to compose mail window.

  • Outlook crashes when trying to send mail. If you experience consistent crash with send mail workflow, please troubleshoot with us via Help > Contact Support.

New or improved features:

  • Emoji support when composing: see emoji added from Emoji & Symbols in the Edit menu

Fixes:

  • Smart Folders is no longer displayed in the Calendar view sidebar if there are no smart folders

  • Added menu item for Message Preview to the View menu

Version: 15.40 (170926)

Fixes:

  • High Sierra: fixed a crash on quit when reminders were present

  • Message Header: The Hide Details button is no longer displayed below the listing of attachments

  • Message Header: Polished layout of attachments and associated action buttons

New or improved features:

  • No new or improved features in this update

Known issues:

  • No known issues in this update 

Version: 15.39 (170919)

New or improved features:

  • Improved performance in the message list by displaying a window of most recent messages in the selected folder

  • Group card is now displayed when hovering over a group in the To: or Cc: lines in the message header

  • Added swipe trackpad gesture support to delete and archive emails

Fixes:

  • Polished layout of meeting response buttons in the meeting invitation header

Known issues:

  • No known issues in this update 

Updated Sept 15, 2017

Version: 15.39 (170913)

Known issue:

  • With some non-English versions of Outlook, Outlook crashes when clicking/selecting a message. This is fixed with the latest Insider Fast release version 15.39 (170915).

New or improved features:

  • Move/copy message: Improved VoiceOver support for searching and navigating folders in the Choose Folder sheet

Fixes:

  • Work offline: After restarting Outlook while still working offline, messages now remain in the Outbox instead of being sent

Version: 15.39 (170905)

New or improved features:

Fixes:

  • Scheduling assistant: Free/busy information is now properly displayed when shared calendars are open

  • Main window: When a message with a larger number of attachments is displayed, the top of the window no longer expands beyond the top of the screen

  • Calendar event: Improved tab order in the event window to navigation between start date, start time, end date, and end time

  • Mail sidebar: Updated ordering of special folders (e.g. Drafts, Sent, Trash, etc.) to better align with Outlook for iOS

Known issues:

  • No known issues in this update

Version: 15.39 (170829)

New or improved features:

  • F6 key can be used to quickly navigate between main areas, such as Ribbon and Sidebar, without having to tab through every control

  • Improved VoiceOver interaction in the Scheduling Assistant

Fixes:

  • Dragging and dropping contacts between To, Cc, and Bcc fields has been restored (known issue from last update)

  • Fixed issue where Outlook was continuously attempting to update certain folders, resulting in high CPU usage

  • Pasting content from Word when composing now correctly displays the clipboard icon with available paste options

  • Fixed issue where Outlook was crashing when using certain Add-ins, such as Boomerang

Known issues:

  • No known issues in this update

Version: 15.38 (170822)

New or improved features:

Fixes:

  • When composing a message, duplicate Attach File buttons are no longer displayed in the Ribbon

  • When using spacebar key to press view selection buttons in the Sidebar, keyboard focus now remains on the button pressed

Known issues:

  • macOS High Sierra: If you have the Cisco WebEx plugin installed, Outlook might crash

  • When composing a message, dragging and dropping contacts between To, Cc, and Bcc fields requires selecting, clicking, and holding before dragging

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)

Fixes:

  • Fixed a known issue in 15.38 (170809) where the Most Recently Used email list is empty when composing email

  • 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

Version: 15.38 (170809)

New or improved features:

  • Improved app stability on crash and hang

  • Added an option to cache password in Keychain when creating a Kerberos ID

  • Improved "Most Recently Used" cache logic to include recently sent email address

  • Improved compose message header so to enhance discoverability of which account the email is going to send from

  • Improved keyboard and VoiceOver navigation on Room Finder

Fixes:

  • Fixed a bug where 'Download all' and 'Preview all' options still remain after removing last attachment in the email

  • Fix a bug of missing free busy information when attendee size of a meeting is greater than 100 - instead of not showing any free/busy information, Outlook now shows the first 100 invitees' availability 

Known issues:

  • No known issues at this time

Version: 15.38 (170801)

New or improved features:

  • Improved app stability on crash and hang.

  • Improved keyboard and VoiceOver navigation on recurrence setting drop-down of meeting items.

  • Improved keyboard and VoiceOver navigation for announcing group join/joining/leave/leaving on Group cards.

  • Improved support message notifications so Outlook shows notification only when it's running in foreground.

Fixes:

  • Fixed a bug to create Outlook mail from mailto url from web browser.

  • Fixed a bug to insert signature below the content generated from mailto link

Known issues:

  • No known issues at this time

Version: 15.37 (170725)

New or improved features:

  • Improved keyboard and VoiceOver navigation for check name UI in compose email

  • Improved app stability on crash and hang

Fixes:

  • When importing an updated calendar event, Outlook will replace original calendar event instead of creating a duplicate

  • Fixed a bug where clicking on "More" on the recipient list does not expand the full list

Known issues:

  • No known issues at this time

Update: A new Insider Fast release is available on 7/20 with version 15.37 (170720). Issues on missing signature and online meeting links are fixed.

Version: 15.37 (170718)

New or improved features:

  • Smart folders list on the new side bar is now visible all time

  • Improved keyboard and VoiceOver navigation for meeting invites and email headers

  • Improved the visuals for drag and drop email(s) to folder

  • Provide a command to use domain-based AutoDiscover when adding Exchange mailbox (Applicable to specific O365 tenants, please contact your IT admin for details)

Fixes:

  • Fixed a reminder issue where created or modified reminders (included snoozed reminders) will not be displayed until you re-launch Outlook

  • Fixed a bug where moving a message with attachment from Inbox to another folder, the attachment is missing when displayed in the new folder

Known issues:

  • Online meeting details and links are missing when creating online meeting. We are working with server team to fix the issue - Update: this is fixed in 15.37 (170720) released on 7/20

  • When manually insert a signature in compose view, the signature is not actually being added. This will be fixed in the next Insider Fast release - Update: this is fixed in 15.37 (170720) released on 7/20

Version: 15.37 (170712)

New and improved features

  • Focused Inbox notification no longer re-prompts after pressing Cancel

  • Delegated and shared calendars and contacts are checked in the sidebar and displayed properly after adding

  • Folders can now be moved under account and On My Computer sections via drag and drop

  • Restored ability to drag and drop mail folder from sidebar to outside of Outlook to create an .mbox file

  • Improved keyboard and VoiceOver navigation when moving to and from "Show All" button in Outlook Preferences

  • Improved tab order in the Accounts preference window

Fixes:

  • Fixed a crash for machines with certain network connection settings or when switching networks

  • Filtering items by "This Week" when "First day of week" is set to Monday now works properly

Known issues:

  • Newly created or modified reminders (included snoozed reminders) will not be displayed until you re-launch Outlook. We've identified a fix which should reach the next Insider Fast update

Additional information:

  • For any issues, please use Help > Contact Support

  • For feature requests, please use Help > Suggest a Feature

  • To get on the Fast level, click Help > Check for Updates > Join the Office Insider program to get early access to new releases > Office Insider Fast

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