Can I use Microsoft Office without Windows?

Yes, for many ordinary documents through Microsoft 365 for the web. Word, Excel and PowerPoint work in a current browser, although some features available in the Windows desktop applications are missing or different.

On Zorin OS, Microsoft says its web applications work in current Edge, Firefox or Chrome on Linux. On ChromeOS Flex, they run through the Chrome browser. You sign in with your Microsoft account and work mainly with files stored in OneDrive.

When the web version is enough

• Writing letters and straightforward reports.
• Editing ordinary spreadsheets.
• Creating and presenting standard slides.
• Sharing and collaborating on documents.
• Opening common Office file formats.

When it may not be enough

Complex Excel macros, specialist add-ins, advanced formatting, mail merge, database work and workflows tied to Windows applications need testing. Outlook in a browser is not identical to the Windows desktop program. Fonts and layouts can also change when documents move between applications.

What about LibreOffice?

Zorin OS can run LibreOffice locally. It is capable, free and opens many Microsoft formats, but compatibility is not perfect. A simple document may look identical; a complicated corporate template may decide to express itself creatively.

ChromeOS Flex is more web-centred and does not install ordinary Windows Office applications. Offline options are more limited and should be tested if the internet is unreliable.

My practical view

If your Office use is ordinary, browser-based Microsoft 365 may be all you need. If your work depends on advanced desktop features, use supported Windows or another platform officially supported by the workflow. Saving a laptop is not a bargain if it breaks the work.

See Microsoft’s current browser guidance.