The free versions of Microsoft Office on Mac are divided into two categories with very different limitations: web applications (Office Online) and local installations via institutional license. Confusing the two leads to disappointment regarding the features actually available. Here, we detail the methods that still work in 2024, the technical prerequisites that most guides overlook, and the pitfalls related to old perpetual versions.
Read-only mode on Mac: why old Office ISOs are no longer sufficient
Microsoft began in early 2024 to implement read-only mode for old perpetual suites like Office 2019 Mac. Specifically, .docx or .xlsx files open, but any modifications are blocked without upgrading to a recent version (2021, 2024, or Microsoft 365).
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This change invalidates the majority of tutorials that advise retrieving an old PKG installer found on a third-party site. Even if the installation succeeds, the user ends up with a frozen Word or Excel in view-only mode.
We therefore recommend avoiding any attempt to reactivate an Office 2016 or 2019 license on recent macOS. The apparent time savings turn into a functional dead end at the first attempt to edit. If you are looking to install the free Office suite on Mac, the only two viable options remain Office Online and institutional licenses, detailed below.
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Microsoft 365 Online: actual features and technical limitations on macOS
The web version of Microsoft 365 (formerly Office Online) is accessible for free with a simple Microsoft account. It works in Safari, Chrome, or Firefox without any local installation. Word, Excel, PowerPoint, and OneNote are available directly in the browser.
What the web version handles correctly
- Editing text documents with standard formatting, title styles, simple tables, and image insertion
- Spreadsheets with up to a few thousand rows, featuring common formulas (VLOOKUP, IF, SUMIF) and basic conditional formatting
- PowerPoint presentations with transitions, simple animations, and presenter mode
- Automatic storage on OneDrive with a free space capped at a few gigabytes
What is missing compared to local installation
VBA macros do not run in the browser. Advanced pivot tables, custom charts, and offline co-authoring are absent. Offline mode does not exist: without a network, no file is accessible.
For light office use (writing, short presentations, tracking spreadsheets), this version is sufficient. It becomes inadequate as soon as a workflow relies on macros, complex templates, or frequent access without an internet connection.
Institutional Microsoft 365 license on Mac: the most comprehensive free method
Several universities and educational institutions offer full free access to Microsoft 365 on Mac for their students and staff. The University of Montreal, for example, allows local installation on multiple devices per user. This type of license provides access to Word, Excel, PowerPoint, Outlook, OneNote, Teams, and OneDrive in full version, with all desktop features.
macOS prerequisites tightened since 2024
Some institutions now require macOS 14 (Sonoma) or later to install Microsoft 365 Apps for Mac. A MacBook stuck on macOS 12 or 13 because its hardware does not support the update is excluded from this option, even with a valid institutional account.
Before starting the procedure, check two points: your Mac’s hardware compatibility with macOS 14 (Apple menu > About This Mac) and your institution’s eligibility for the Microsoft 365 Education program. The login page is located on the Office portal with the institution’s email address.
Difference with a personal Microsoft 365 subscription
The institutional license offers the same desktop applications as a Microsoft 365 Family or Personal subscription. The only restriction concerns the duration: access remains active as long as the student or employee status is verified by the institution. At the end of the course or contract, the applications switch to read-only mode after a grace period.
Free alternatives that can be installed locally on Mac
For users who do not have an institutional account or permanent connection, third-party office suites replace Office on Mac with reasonable compatibility for .docx and .xlsx formats.
- LibreOffice: open-source suite with word processing, spreadsheet, and presentation tool, compatible with macOS 14 and Apple Silicon natively
- Apple iWork (Pages, Numbers, Keynote): pre-installed on every recent Mac, with import and export to Microsoft Office formats
- WPS Office: free version with ads, interface similar to Microsoft Office, available on the Mac App Store
LibreOffice handles LibreOffice Basic macros (partially compatible with VBA). Apple iWork does not support macros at all. WPS Office offers the interface closest to Microsoft Office, but the free version displays regular ads and limits some PDF export functions.
The choice depends on the primary need: maximum compatibility with received Office format files (LibreOffice), native integration into the Apple ecosystem (iWork), or interface comfort for a former Windows user (WPS Office).
None of these alternatives fully replace Microsoft 365 for professional use involving VBA macros or advanced Excel templates. For personal or student use without strict compatibility constraints, they cover nearly all needs without a paid license or subscription.