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Office Compatibility Issues

How to Get Microsoft Office for Free on macOS Big Sur

Maira MehtabMaira Mehtab Sep 22, 2026 868 views

Question details

The user is looking for ways to get Microsoft Office for free on a Mac running macOS Big Sur 11.7.10 and wants to understand desktop compatibility.

Product
Microsoft Office for Mac
Device & OS
macOS Big Sur 11.7.10
Scenario
Finding a free or compatible way to use Word, Excel, and PowerPoint on an older macOS version.
Observed behavior
Current Microsoft Office desktop versions require newer macOS versions and are not free, prompting the need for web-based options or alternative software.
Before you start

Verify your exact macOS version by clicking the Apple logo in the top-left corner and selecting 'About This Mac'. Ensure you have a stable internet connection if you plan to use web-based applications.

Solution 1Recommended

Use Microsoft Office Web Apps for Free

The official and most reliable way to use Microsoft Office for free on macOS Big Sur is through their web-based applications.

While the desktop versions of Microsoft Office require a paid subscription or license and may lack support for older operating systems, Microsoft offers free online versions of Word, Excel, and PowerPoint.

1
Open your web browser

Launch Safari, Google Chrome, or any preferred modern web browser on your Mac.

2
Navigate to Microsoft 365

Go to Microsoft365.com or OneDrive.com in your browser's address bar.

3
Sign in or create an account

Click 'Sign In' and enter your existing Microsoft account credentials. If you do not have one, click 'Sign up for free' to create a new account.

4
Launch the web apps

Once logged in, use the app launcher icon (nine dots) in the top-left corner or the sidebar to open Word, Excel, or PowerPoint and start creating documents directly in your browser.

Internet Connection Required: You must remain connected to the internet to create, edit, and save files using the free web versions of Microsoft Office.
Free Microsoft Office alternative

Use WPS Office on Your Mac

Since the latest Microsoft Office desktop applications may not support macOS Big Sur and are not free, WPS Office offers a lightweight, highly compatible, and free desktop alternative. You can easily create, edit, and save files natively on your Mac without a subscription.

  1. 1. Download for Mac: Visit the WPS Office website and download the Mac installation package.
  2. 2. Install the application: Open the downloaded .dmg file and drag the WPS Office icon into your Applications folder.
  3. 3. Start editing: Launch WPS Office and easily open or create Word, Excel, and PowerPoint files offline.
Fully compatible with Microsoft Office formats like .docx, .xlsx, and .pptxLightweight design that runs smoothly on older operating systems like macOS Big SurAll-in-one tabbed interface for documents, spreadsheets, and presentationsFree to use for desktop editing without mandatory subscription fees
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Frequently Asked Questions

Why can't I install the latest Microsoft Office on macOS Big Sur?

Microsoft typically supports only the three most recent major versions of macOS. As Apple releases new macOS updates, older versions like Big Sur (macOS 11) eventually lose support for new Microsoft Office desktop installations.

Can I use Microsoft Office offline for free on my Mac?

No, the official free version of Microsoft Office is restricted to the web browser and requires an internet connection. For offline editing, you either need a paid Microsoft 365 subscription (if your OS is supported) or a free third-party desktop alternative.

Do the free Microsoft Office web apps have all the features of the desktop version?

No, the web versions of Word, Excel, and PowerPoint are streamlined. They include the core formatting and editing tools most users need, but lack advanced features like complex macros, certain add-ins, and advanced layout formatting.

Is it safe to download older versions of Microsoft Office to run on Big Sur?

Downloading older software from unverified third-party sites can pose a security risk. It is safer to use the official free web apps or download a maintained, compatible alternative suite directly from its official developer.