Fix Office 2019 Activation Issues on macOS Big Sur
Question details
Users experience unexpected activation prompts or subscription requests in Office Home and Student 2019 for Mac after upgrading their operating system to macOS Big Sur.

- Product
- Microsoft Office Home and Student 2019
- Device & OS
- macOS Big Sur
- Scenario
- Opening Office applications to edit documents after performing a macOS system update.
- Observed behavior
- The Office application incorrectly requests a Microsoft 365 subscription or fails to recognize the permanent license, preventing the user from editing documents.
Ensure you have the login credentials for the specific Microsoft account used to originally purchase Office 2019, and verify you are connected to the internet to allow the activation server to authenticate your license.
Update Office 2019 and Verify Microsoft Account Details
Updating the software ensures compatibility with macOS Big Sur, and signing in with the correct account resolves license mismatch issues.
Major macOS updates can cause older versions of Office (such as versions older than 15) to lose compatibility or reset application permissions. Keeping your Microsoft AutoUpdate utility and Office apps current is the most effective way to restore your license recognition.
Open Finder, navigate to Applications, select the Microsoft Word application, and choose 'Get Info' to check the version number. Ensure it is version 16 or newer.
Open any Office application like Word, click 'Help' in the top Apple menu bar, select 'Check for Updates', and install all available updates to ensure Big Sur compatibility.
When prompted by the activation screen, type in the email address of the Microsoft account associated with your Office 2019 purchase. Do not use your Apple ID.
If activation fails, log into the Microsoft account website through your browser, navigate to 'Services & subscriptions', and confirm that your Office Home and Student 2019 license is active and listed.
Try WPS Office for Mac – A Free Alternative Without Activation Headaches
If your Office 2019 license cannot be activated after a macOS update, consider switching to WPS Office. It provides a lightweight, highly compatible alternative to Microsoft Office without the recurring subscription prompts or complex troubleshooting steps.
- 1. Download WPS Office for Mac: Visit the official WPS website and download the installation package designed for macOS.
- 2. Install the software: Open the downloaded .dmg file and drag the WPS Office icon into your Applications folder.
- 3. Open your Office files: Launch WPS Office and directly open your existing Microsoft Office files to continue your work without missing a beat.

Frequently Asked Questions
Why does Office 2019 ask for a subscription after updating to macOS Big Sur?
macOS updates can sometimes reset app permissions or require newer app versions to run properly. If your Office version is outdated, it may misidentify your permanent license and mistakenly prompt you for a Microsoft 365 subscription.
Can I use my Apple ID to activate Office 2019 for Mac?
No, Office 2019 must be activated using the specific Microsoft account that was used to purchase the software. Using an Apple ID or a different email address will result in an activation failure.
What should I do if my Office version is too old for macOS Big Sur?
If you are running an older version (version 15 or older), it is likely incompatible with Big Sur. You will need to upgrade to a newer version through Microsoft AutoUpdate, use the free web versions of Microsoft Office, or switch to an alternative suite like WPS Office.
How do I check which version of Office I am running on my Mac?
Open Microsoft Word, click on 'Word' in the top menu bar, and select 'About Word'. Alternatively, you can find the application in Finder, right-click it, and select 'Get Info'.




