Using Linux Workstations Without Giving Up Microsoft 365 Web Apps

Moving a workstation to Linux does not automatically mean abandoning Microsoft 365.

Microsoft provides browser versions of several Microsoft 365 applications, including Word, Excel, PowerPoint and OneNote.

Outlook on the web also works in current Firefox and Chrome on Linux.

The important limitation is that Microsoft 365 web apps are not the same thing as the Windows desktop Office applications.

What continues to work in the browser

For many ordinary office workflows, users can continue to:

• open and edit Word documents;
• work with Excel spreadsheets;
• create or present PowerPoint files;
• use OneNote;
• access Outlook mail and calendars;
• work with files stored in SharePoint or OneDrive through the browser.

That can make Linux practical for offices already centered on Microsoft 365 cloud workflows.

Outlook works, with caveats

Microsoft's current browser-support documentation says Outlook.com and Outlook on the web work in Firefox and Chrome on Linux.

Microsoft also notes that some features may not be available.

That wording matters.

A business should test the features it actually uses, such as:

• shared mailboxes;
• delegated calendars;
• meeting scheduling;
• signatures;
• rules;
• contacts;
• browser notifications.

Do not assume that because email opens, the entire Outlook desktop workflow is reproduced.

Word and Excel need real-file testing

Simple documents are easy.

Complex documents deserve testing.

Check representative examples that include:

• advanced formatting;
• tracked changes;
• templates;
• macros;
• add-ins;
• linked data;
• complex formulas;
• unusual fonts.

The browser edition may handle the document well enough, or it may expose a dependency on desktop Office.

The answer has to come from the business's own files.

OneDrive and SharePoint remain accessible

Linux users can access OneDrive and SharePoint through Microsoft 365 browser interfaces.

What Linux does not provide is the same native OneDrive integration experience that Windows users receive by default.

If the office depends heavily on automatic filesystem synchronization, that workflow needs to be tested separately.

Browser access is not identical to a native sync client.

Offline work is more limited

A browser-based Microsoft 365 workflow assumes reliable internet connectivity more heavily than desktop Office does.

If the office needs to keep working through internet outages, identify which files and applications remain available locally.

Do not advertise Microsoft 365 web as a complete offline replacement for desktop Office.

Browser extensions and local integrations matter

Office workflows may depend on things outside Microsoft 365 itself.

Examples include:

• document-signing tools;
• browser extensions;
• local scanner utilities;
• desktop PDF software;
• mail-merge helpers;
• proprietary add-ins.

Those integrations need their own compatibility checks.

Linux can coexist with Microsoft services

The useful distinction is:

Linux replaces the operating system. It does not require replacing every cloud service the business already uses.

A company can run Linux workstations while continuing to pay for and use Microsoft 365 web services.

For a broader browser-centric office assessment, see Running a Browser-Based Business From Linux Instead of Windows.

For employee onboarding after migration, see How to Train Employees After a Small Business Switches to Linux.