Installing Microsoft Office On Mac

  1. Download Microsoft To Do for macOS 10.14 or later and enjoy it on your Mac. ‎Stay organized and manage your day-to-day with Microsoft To Do. Make shopping lists or task lists, take notes, record collections, set reminders and more to improve your productivity and focus on what matters.
  2. How to Install or Reinstall Microsoft OfficeHow to Download and Install Microsoft Office 2019? From time to time we have to reinstall Windows 10.
  3. If you're running into errors or issues with installing or activating Office on your Mac, see What to try if you can't install or activate Office for Mac instead. Before you begin activating, if you haven't already, you'll need to redeem and install Office on your PC or Mac.

Several users have been reporting this and I notice the Macs in Apple Store running macOS Mojave are actually on Office 365 version 15.31. What I would recommend you do is download and install Office for Mac 15x, then try updating from that to 16.20. #Microsoft #Office365 #O365MacIn this video a short demonstration on Installing Microsoft Office 365 on Your Mac OS Device.


This guide is intended to help administrators and other IT professionals to plan, implement, and maintain deployments of Office on devices running macOS in their organization.

There are several versions of Office that are referred to in this guide:

  • Office for Mac, which is available with any Microsoft 365 (or Office 365) plan that includes the Office desktop apps. For example, the Microsoft 365 Business Premium plan or the Office 365 E5 plan. This version is updated on a regular basis to provide new features. It also receives security and quality updates, as needed.

  • Office LTSC for Mac 2021, which is available through a volume licensing agreement. This version receives security and quality updates, as needed.

  • Office 2019 for Mac, which is available as a one-time purchase from a retail store or through a volume licensing agreement. This version receives security and quality updates, as needed.


Support for Office 2016 for Mac ended on October 13, 2020. For more information, see End of support for Office 2016 for Mac.

This guide covers the following areas:

In addition to this guide, other information is available to help admins with Office for Mac deployments, including the following sites:

  • System requirements for Microsoft 365 and Office, for installation requirements, such as supported operating systems.

  • Microsoft 365 for Mac, for purchasing information.

  • Office Help & Training, for help on how to use Office for Mac.


Applies to:Office LTSC for Mac 2021, Office 2019 for Mac

The Volume License Serializer (VL) is used to activate Office LTSC for Mac 2021 or Office 2019 for Mac as a volume licensed version. The VL Serializer is a package (.pkg) file that you run on a Mac where Office is installed.

Download the Volume License (VL) Serializer from the VLSC

To download the VL Serializer, do the following steps:

  1. Sign in to the Volume Licensing Service Center (VLSC).
  2. Select the Download and Keys tab.
  3. Search for 'Office LTSC Standard for Mac 2021' or 'Office 2019 for Mac Standard' (depending on which version of Office you're licensed for).
  4. Select the Download link in the results panel.
  5. Select the Continue button at the bottom of the window.
  6. Select the icon (circle with download arrow) to download the VL Serializer .iso file.
  7. Once the download is complete, mount the .iso file to extract the VL Serializer package file.

Then, deploy and run the VL Serializer package file on each Mac that you want to activate Office as a volume licensed version.

Office LTSC for Mac 2021 information

Reinstall microsoft office on mac after restore

Installing Microsoft Office On Macbook

  • The name of the package file is Microsoft_Office_LTSC_2021_VL_Serializer.pkg.
  • The package file is approximately 12 MB in size.
  • Volume licensed versions of Office LTSC for Mac 2021 have version numbers of 16.53 or higher.
  • The VL Serializer has been improved so that a management tool can run the VL Serializer in the background even while the user still has Office 2019 for Mac apps open and running. The next time the user closes and opens the app, Office will switch over to using the Office LTSC for Mac 2021 license. This should help minimize user disruption when organizations move from Office 2019 for Mac to Office LTSC for Mac 2021.

Office 2019 for Mac information

Installing Microsoft Office On Macbook Air

  • The name of the package file is Microsoft_Office_2019_VL_Serializer_Universal.pkg.
  • The package file is approximately 11.5 MB in size.
  • Volume licensed versions of Office 2019 for Mac have version numbers of 16.17 or higher.

Additional information about the VL Serializer

Run Microsoft Office On Mac

  • The VL Serializer provides native support for both Apple Silicon and Intel-based Macs.
  • The volume license is located in the /Library/Preferences/ file.
  • The licensing plist generated by the VL Serializer contains data that's encrypted by using the serial number of the boot drive on the device where it was generated. Upon each Office application launch, the plist is decrypted by using the current boot drive serial number as the decryption key. If the data cannot be decrypted (for example, boot drive serial number is different), Office will go into an unlicensed state without warning.
  • Because the license plist file is encrypted using information from the device on which it's installed, you can't copy it to a different device to activate Office on that device.
  • There's a single VL Serializer package that contains a single key that's shared between all volume licensed customer installations.
  • The VL Serializer package contains a binary executable that's named 'Microsoft Office Setup Assistant.' It's this executable that actually activates the volume license.
  • The VL Serializer package is compatible with mobile device management (MDM) servers, such as Jamf Pro or FileWave.

Related articles