Release history for Microsoft AutoUpdate (MAU)

We recommend that you always update to the latest version of Microsoft AutoUpdate (MAU).

The following table provides release history information for Microsoft AutoUpdate. The table is ordered by release date, with the most recent release date listed first. All update packages are 64-bit.


  • Download links are only provided for the most recent release of Microsoft AutoUpdate
  • Microsoft AutoUpdate provides updates to various Mac products from Microsoft. Therefore, you might receive a notification to update Microsoft AutoUpdate even if you're not running Office for Mac.

To view release notes, see Release notes.

January 2023 release

Release Date: January 10, 2023

Microsoft AutoUpdate 4.55


  • Added additional logging to help troubleshoot why updates weren’t applied after system restart

Bug Fixes:

  • Fixed an issue where the msupdate command-line tool could incorrectly report that an app update is available even though the update was just applied
  • Fixed an issue where the AutoUpdate user interface could incorrectly report a ‘Check error’ message
  • Fixed an issue where AutoUpdate could report a negative number if the system time was changed during an update session

Download Microsoft AutoUpdate 4.55 Package

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December 2022 release

Release Date: December 13, 2022

Microsoft AutoUpdate 4.54

Bug Fixes:

  • Fixed an issue where the AutoUpdate user interface indicated that all apps were up to date prior to checking for updates
  • Fixed an issue where the msupdate command-line tool could incorrectly report that no updates are available
  • Fixed an issue where the Licensing Helper triggered a macOS upgrade notification

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November 2022 release

Release Date: November 15, 2022

Microsoft AutoUpdate 4.53


  • Microsoft AutoUpdate is now able to check for app updates even if the previous update cycle is still running. In previous versions, an update cycle had to fully complete, and all open apps had to be closed before a new update cycle could begin
  • Microsoft AutoUpdate’s dormant activity check has been extended from 3 days to 7 days

Bug Fixes:

  • Fixed an issue where Microsoft AutoUpdate could incorrectly restore a corrupted backup of an app
  • Fixed an issue where the Microsoft AutoUpdate user interface did not correctly reflect the state of update checking
  • Fixed an issue where notifications generated by Microsoft AutoUpdate would auto-dismiss
  • Fixed an issue where the msupdate command would check for updates on all registered apps even though a single app was specified on the command line
  • Fixed an issue where Microsoft AutoUpdate could prematurely terminate due to incorrect file sizes
  • Fixed an issue where the forced update deadline would still be calculated when the feature was disabled
  • Fixed an issue where the Microsoft AutoUpdate user interface would show an error if the app remained open for several days

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October 2022 release

Release Date: October 11, 2022

Microsoft AutoUpdate 4.52

Major Changes:

  • Microsoft AutoUpdate 4.52 and later requires a minimum of macOS 10.13 High Sierra


  • New logic to roll-forward or roll-back from a failed update during system restart
  • Code reorganization to reduce the size of the Microsoft AutoUpdate package
  • Improved code robustness to protect against unexpected errors

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September 2022 release

Release Date: September 13, 2022

Microsoft AutoUpdate 4.51


  • AutoUpdate now displays a warning if running in the background is disabled on macOS Ventura
  • Improved accessibility in the graphical user interface
  • Enhanced reliability of the deadline feature

Bug Fixes:

  • Fixed an issue where cloned apps are incorrectly removed on launch when GuardAgainstAppModification is set
  • Fixed an issue where the Update Assistant unexpectedly closes when the clone folder is missing

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August 2022 release

Release Date: August 16, 2022

Microsoft AutoUpdate 4.50


  • Enhancement to deadline feature so that the clone is updated and verified before the user sees the final countdown. This significantly reduces the amount of down time for app updates
  • The default checking interval has changed from 12 to 13 hours so that update times are staggered
  • A suffix of .noindex has been added to the Clones staging folder to prevent Spotlight from indexing temporary app bundles
  • IT admins can now set a new Boolean-based preference called GuardAgainstAppModification so that binary delta updates can be applied if a third-party application has modified the app bundle

Bug Fixes:

  • Fixed an issue where a delta update was incorrectly applied if the cloning operation failed
  • Fixed an issue where cancelling an update would not work
  • Fixed an issue where the countdown timer could not display more than 99 minutes
  • Fixed an issue where the ‘Show in Finder’ option would fail
  • Fixed an issue where Microsoft AutoUpdate could crash if an invalid date/time had been set
  • Fixed an issue where Microsoft AutoUpdate could crash when constructing the download URL

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July 2022 release

Release Date: July 12, 2022

Microsoft AutoUpdate 4.49


  • Improved the workflow for updating apps through the Microsoft AutoUpdate user interface

Bug Fixes:

  • Fixed an issue where the Microsoft AutoUpdate user interface would launch when there are no app updates shown on GUI
  • Fixed an issue where Microsoft AutoUpdate could crash under low memory conditions
  • Fixed an issue where Microsoft AutoUpdate could become unresponsive on startup

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June 2022 release

Release Date: June 14, 2022

Microsoft AutoUpdate 4.48


  • IT admins can now override the default deadline time of 60 minutes through the UpdateDeadline.FinalCountDown preference
  • Microsoft AutoUpdate now has better retry logic when switching between different network connections
  • Microsoft AutoUpdate will now show a help link if folder permissions are incorrect or the helper tool is missing
  • The Microsoft AutoUpdate user interface will no longer halt and ask the user to close the app if it is currently open
  • Enhancements for VoiceOver when using the Microsoft AutoUpdate user interface

Bug Fixes:

  • The installer package now correctly specifies macOS 10.12 as the minimum operating system for installation
  • Fixed various crashes that could happen during download and install of app updates
  • Fixed an issue where button text was truncated for French-speaking users

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May 2022 release

Release Date: May 10, 2022

Microsoft AutoUpdate 4.47

Bug Fixes:

  • Fixed an issue where Microsoft AutoUpdate could crash when restoring a clone
  • Fixed an issue where an icon would show in the dock when the msupdate command-line utility is invoked

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April 2022 release

Release Date: April 21, 2022

Microsoft AutoUpdate 4.46

Bug Fixes:

  • Fixed an issue where apps will not update after restarting macOS

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Release Date: April 12, 2022

Microsoft AutoUpdate 4.46


  • Microsoft AutoUpdate will now complete app updates as part of a system restart
  • Microsoft AutoUpdate will now update apps even if they have been renamed
  • Microsoft AutoUpdate will automatically fix permission issues for the user preferences file

Bug Fixes:

  • Fixed an issue where the msupdate command-line tool would hang on process shutdown
  • Fixed an issue where the Microsoft AutoUpdate GUI could crash on process shutdown
  • Fixed an issue where updates would fail if a cached package is locked

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March 2022 release

Release Date: March 15, 2022

Microsoft AutoUpdate 4.45


  • Microsoft AutoUpdate will now detect, download and apply updates to Microsoft Teams
  • Microsoft AutoUpdate now has additional caching to avoid duplicate package downloads
  • The deadline dialog is only displayed when updates have been staged and are ready to be installed

Bug Fixes:

  • Fixed an issue where Microsoft AutoUpdate fails to apply updates due to an expired certificate
  • Fixed an issue that prevented macOS from shutting down and restarting gracefully
  • Fixed an issue where Microsoft AutoUpdate didn't shutdown and restart after 72 hours
  • Fixed an issue where the UpdateCheckFrequency preference wasn't being honored
  • Fixed an issue where Microsoft AutoUpdate would crash on process shutdown

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February 2022 release

Release Date: February 16, 2022

Microsoft AutoUpdate 4.44

Bug Fixes:

  • Fixed an issue that can cause Microsoft AutoUpdate to close unexpectedly if multiple 'check for update' requests are issued
  • Fixed an issue that can cause Microsoft AutoUpdate to stop responding indefinitely on start-up
  • Fixed an issue that can cause Office apps to open in a hidden state after an update has been applied

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January 2022 release

Release Date: January 13, 2022

Microsoft AutoUpdate 4.43

Bug Fixes:

  • Fixed an issue that can cause Microsoft AutoUpdate to prematurely terminate

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December 2021 release

Release Date: December 14, 2021

Microsoft AutoUpdate 4.42


  • Improved support for VoiceOver
  • When using the GUI, MAU will now close and relaunch apps
  • Reminder dialog will be displayed at a later time if user has previously chosen to snooze updates

Bug Fixes:

  • Fixed an issue where Whats New content was missing in the GUI
  • Fixed an issue where the update notification dialog didn't appear in some scenarios
  • Fixed an issue where MAU would be terminated prematurely on slow devices
  • Fixed a problem that caused MAU to terminate if multiple update requests had been issued

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November 2021 release

Release Date: November 16, 2021

Microsoft AutoUpdate 4.41

Bug Fixes and Enhancements:

  • MAU will now display an in-app message bar (Word, Excel, PowerPoint) when an update is ready to be installed
  • Word, Excel, and PowerPoint will be automatically updated and relaunched if there are no unsaved document changes
  • If an app fails to update within the allotted time, MAU will retry the update without needing to re-download update packages
  • Added support for updating the Office licensing helper. See for more details

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October 2021 release

Release Date: October 12, 2021

Microsoft AutoUpdate 4.40

Bug Fixes and Enhancements:

  • MAU now uses an enhanced content delivery network (CDN) for updates (
  • User experience refinements made to the deadline functionality
  • Fixed an issue where application corruption could happen in some update scenarios

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September 2021 release

Release Date: September 14, 2021

Microsoft AutoUpdate 4.39

Bug Fixes and Enhancements:

  • Bug Fix: Applications will not relaunch after updates if they were not terminated using MAU prompts

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August 2021 release

Release Date: August 10, 2021

Microsoft AutoUpdate 4.38

Bug Fixes and Enhancements:

  • MAU's CLI now displays notification after the update packages have already been downloaded and are ready to be installed.

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July 2021 release

Release Date: July 13, 2021

Microsoft AutoUpdate 4.37

Bug Fixes and Enhancements:

  • Change to notification from msupdate – MAU will now download and stage updates before showing notification from IT admins.
  • Fix for MAU displaying old application version after applying updates.
  • Fix for MAU deadline notification not being dismissed upon initiating updates.

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June 2021 release

Release Date: June 15, 2021

Microsoft AutoUpdate 4.36

Bug Fixes and Enhancements:

  • Docktile Progress Indicator - MAU now shows progress indication on the Icon displayed in the dock.
  • Opportunistic completion of update - MAU will attempt to apply delayed updates during device shutdown/reboot.

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May 2021 release

Release Date: May 13, 2021

Microsoft AutoUpdate 4.35

Bug Fixes and Enhancements:

  • Addressed potential issues with concurrent updates that caused the “An Update is already in progress” prompt to be displayed.
  • Bug fix on Skip dialog displaying twice.
  • Bug fix on showing multiple notifications for the same update.
  • Size reduction on Microsoft AutoUpdate installer / updater package.
  • Command Line Interface (CLI) now uses native xpc to communicate with Microsoft Update Assistant instead of Apple Events.

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April 2021 release

Release Date: April 13, 2021

Microsoft AutoUpdate 4.34

Bug Fixes and Enhancements:

  • The subtler 'Badging Notifications' will now indicate update availability, instead of the traditional OS Notification prompts, for users in manual updates mode.

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March 2021 release

Release Date: March 17, 2021

Microsoft AutoUpdate 4.33

Bug Fixes and Enhancements:

  • "Checking.." button on the MAU GUI is now disabled when MAU is checking for updates.
  • "An Update is already in progress" prompt now has additional information.
  • MAU UI displays the correct update sizes while downloading updates.
  • MAU is now installable on macOS devices with M1 without Rosetta.

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February 2021 release

Release Date: February 17, 2021

Microsoft AutoUpdate 4.32

Bug Fixes and Enhancements:

  • Documentation Update: Missing flag descriptions for -t, -m and update flags are now available in command line interface of MAU.
  • Accessibility Updates: Voice Over announcements are now available for download/install progress bar on MAU UI and Update Channel labels on MAU's user preferences UI.
  • Functionality Update: Main Menu bar of MAU now has an Edit option to allow for keyboard shortcuts.
  • Other Updates: MAU's Copyright year has been updated to 2021.

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January 2021 release

Release Date: January 13, 2020

Microsoft AutoUpdate 4.31

Bug Fixes and Enhancements:

  • For devices that aren't on automatic updates, Microsoft AutoUpdate will now inform about new updates via notification instead of opening MAU UI.

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December 2020 release

Release Date: December 15, 2020

Microsoft AutoUpdate 4.30

Bug Fixes and Enhancements:

  • Adds Universal app support for Macs with M1.

MAU Update Link:

SHA-256 Hash: 9F4C49BE4FCC82DED7BD394F4F2057912B40D0083F754D15495B7BDE9E58EAC4

November 2020 release

Release Date: November 10, 2020

Microsoft AutoUpdate 4.29

Bug Fixes and Enhancements:

  • Updated channel names for Microsoft 365.
  • Fixed an issue, which prevented certain OneDrive installs from getting updates.

MAU Update Link:

SHA-256 Hash: 7EDE97D524CE7E7869A4033D25270057E670588886F7A0E02628CC7FCB4F7851

October 2020 release

Release Date: October 13, 2020

Microsoft AutoUpdate 4.28

Bug Fixes and Enhancements:

  • MAU UI: Summary View now shows user attention is needed on errors
  • Both MAU UI and Update Assistant now self-terminate after 72 hours of no action.
  • MAU UI: Now comes with a Windows menu

MAU Update Link:

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September 2020 release

Release Date: September 16, 2020

Microsoft AutoUpdate 4.27

Bug Fixes and Enhancements:

  • The MAU Update Assistant will now start updates behind a locked screen even if the regular check cycle not reached.

MAU Update Link:

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August 2020 release

Release Date: August 11, 2020

Microsoft AutoUpdate 4.26

Bug Fixes and Enhancements:

  • The MAU icon in the dock will now display the number of available updates.
  • MAU will now launch in minimized state when updates are detected.
  • Added a new “IgnoreUIOpenAfterInstall” preference that can be used for preventing the MAU UI from launching after install.
  • Solved a permissions issue that caused an “Incorrect installation” message to be displayed
  • Extended the persistence of the MAU “Update deadline” notification message from 60 seconds to 1 hour.

MAU Update Link:

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July 2020 release

Release Date: July 14, 2020

Microsoft AutoUpdate 4.25

Bug Fixes and Enhancements:

  • Detect app termination and automatically remove displayed dialog related to "open app".
  • Reverted the feature introduced in the April release that users with Automatic Updates off would see the Microsoft AutoUpdate UI only once per week.
  • Fixed an issue where Update Assistant closed unexpectedly before install began, after downloading updates.
  • Fixed an issue where Update Assistant didn't close after a prolonged duration of pending user notifications.
  • Fixed an issue where the MAU UI reopened (or didn't reopen) after install. The UI should open after install if the update is started from the MAU UI itself, or if an update is explicitly started by the user (via Finder, Terminal, and so on.).

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June 2020 release

Release Date: June 18, 2020

Microsoft AutoUpdate 4.24

Bug Fixes and Enhancements:

  • Customer Messaging Campaign: Office for Mac 2016 will be out of support in October 2020.
  • Security fix for MAU's Helper Tool XPC connection.

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May 2020 release

Release Date: May 12, 2020

Microsoft AutoUpdate 4.23

Bug Fixes and Enhancements:

  • For devices using macOS 10.13 or above and Office 2016 versions, users will see notifications of Office 2016 reaching end of support.
  • If the apps Word, Excel and PowerPoint don't have a window open, and the device is in Microsoft AutoUpdate's Automatic mode of updates, users won't need to quit these apps to apply updates. Microsoft AutoUpdate will now automatically refresh it's Update Dashboard with the latest releases on the CDN, without the user having to refresh it or launch a new AutoUpdate Session.

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April 2020 release

Release Date: April 21, 2020

Microsoft AutoUpdate 4.22

Bug Fixes and Enhancements:

  • Microsoft AutoUpdate UI won't be displayed on devices that are updating their Office apps via Microsoft AutoUpdate in 'Automatic' mode and for devices taking updates in non-Automatic mode when there are no new updates available.

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Release Date: April 14, 2020

Microsoft AutoUpdate 4.22

Feature Updates:

  • Security Fix: Microsoft AutoUpdate will be preventing any insecure connections from older versions.
  • Users with Automatic Updates OFF will see Microsoft AutoUpdate UI only once per week.
  • macOS machines with SSD will experience faster updates and negligible app downtime because of updates.

See CVE-2020-0984

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March 2020 release

Release Date: March 10, 2020

Microsoft AutoUpdate 4.21

Feature Updates:

  • State Restoration Enabled for Word, Excel and PowerPoint, running without any windows open, or running the Docstage state, in automatic updates mode of Microsoft AutoUpdate. Now updates will be even more silent for end users in Automatic Updates mode, as they don't need to quit their apps that qualify for Update via State Restoration.

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February 2020 release

Release Date: February 11, 2020

Microsoft AutoUpdate 4.20

Feature Updates:

  • Microsoft AutoUpdate UI launches only if at least 1 app on the device is registered with MAU
  • Bug fixes and Enhancements

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January 2020 release

Release Date: January 14, 2020

Microsoft AutoUpdate 4.19

Feature Updates:

  • Bug Fixes and enhancements

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December 2019 release

Release Date: December 10, 2019

Microsoft AutoUpdate 4.18

Feature Updates:

  • Channel Per App: Mac Admins can now subscribe to different channels or rings of validation per app.

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November 2019 release

Release Date: November 12, 2019

Microsoft AutoUpdate 4.17

Feature Updates:

  • What's New in each major update can now be viewed on the Microsoft AutoUpdate dashboard.
  • Minimum OS requirements for Office 2019 updates have changed to macOS 10.13 with the release of Catalina. Users will be notified to get upgrade to latest Office Updates.

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October 2019 release

Release Date: October 15, 2019

Microsoft AutoUpdate 4.16

Feature Updates:

  • Starting Microsoft AutoUpdate 4.16, the all new improved end-user experience is now available for all customers.

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September 2019 release

Release Date: September 10, 2019

Microsoft AutoUpdate 4.15

Feature Updates:

  • MAU Update Deadline Notifications will now display time of deadline to end users in their local device's time format.
  • MAU AU Daemon is now called Microsoft Update Assistant.
  • Fixed an issue where focus was stolen from the foreground app when running the 'msupdate' command.

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August 2019 release

Release Date: August 13, 2019

Microsoft AutoUpdate 4.14

Feature Updates:

  • Fixed various issues for improving voice over translations, update performance and UI.
  • Added telemetry and fixes for troubleshooting.

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July 2019 release

Release Date: July 18, 2019

Microsoft AutoUpdate 4.13

Feature Updates:

  • Privacy Changes for MAU: A Required Data Collection Notice will be shown to end users as part of compliance.
  • MAU Update Deadline: Mac Admins can now set a deadline within MAU to enforce updates across their Mac users. Learn more
  • Various Bugs and performance fixes.

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June 2019 release

Release Date: June 27, 2019

Microsoft AutoUpdate 4.12

Feature Updates:

  • Fixed an issue with Apple OS beta causing failures in MAU updates for full updaters.

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Release Date: June 9, 2019

Microsoft AutoUpdate 4.12

Feature Updates:

  • Binary Delta Updates: Smaller updates are available for SSD devices, by doing that reducing the bandwidth consumption because of updates.
  • Support for Accessory Apps: MAU now supports accessory apps such as Microsoft OneDrive.
  • Install on Clone enhancements: Updating clones is now more robust.

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May 2019 release

Release Date: May 14, 2019

Microsoft AutoUpdate 4.11

Feature Updates:

  • Privacy Changes for MAU: A Required Data Collection Notice will be shown to end users as part of compliance.
  • MAU Update Deadline: Mac Admins can now set a deadline within MAU to enforce updates across their Mac users. Learn more
  • Various Bugs and performance fixes.

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April 2019 release

Release Date: April 16, 2019

Microsoft AutoUpdate 4.10

Feature Updates:

  • Install On Clone Feature Enhancements: For SSD devices, rolling out updates on clone for apps in use, by doing that reducing the app downtime because of updates.
  • Installation Optimizations: App downtime will be reduced as update process will use parallelized cloning.

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Release history

Release date Version More information
September 10, 2019

August 13, 2019

July 18, 2019

June 27, 2019
June 9, 2019

May 14, 2019

April 16, 2019

March 14, 2019
Release notes

February 26, 2019
Release notes

January 16, 2019
Release notes
December 11,2018
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November 14, 2018
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October 16, 2018
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September 11, 2018
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August 14, 2018
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July 10, 2018
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June 12, 2018
May 15, 2018
April 10, 2018
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March 13, 2018
February 13, 2018
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January 18, 2018

December 17, 2017
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December 12, 2017

October 10, 2017

September 12, 2017
Release notes

August 15, 2017

July 11, 2017

June 13, 2017

May 9, 2017
Release notes

April 11, 2017
Release notes

February 16, 2017
Release notes

January 11, 2017
Release notes

December 13, 2016

November 15, 2016

October 11, 2016
KB 3193438

August 22, 2016
KB 3179163

May 10, 2016
KB 3155777

April 12, 2016
KB 3142577

January 5, 2016
KB 3133674