Help guide

Installing Microsoft 365 Apps

How to install Word, Excel, Outlook, and the rest of Microsoft 365 on your Mac or Windows PC, and activate them with your work account.

Recommended: install the full suite

We recommend installing the complete Microsoft 365 suite rather than individual apps. The suite installs Word, Excel, PowerPoint, Outlook, OneNote, OneDrive, and Teams together, so everything stays on the same version and updates together, and you sign in once.

Before you start, have your work email address and password ready. That's the account your Microsoft 365 license belongs to, not a personal Microsoft account.

On a Mac

Download the Microsoft 365 business suite installer:
Download Microsoft 365 for Mac
It's about 2 GB and downloads from Microsoft.
Open your Downloads folder and double-click the file named Microsoft_365_and_Office…Installer.pkg.
Click Continue, then Agree, then Install, and enter your Mac's password when asked. The install takes about 10–15 minutes.
Open Microsoft Word from Launchpad or the Applications folder, click Sign in, and enter your work email address to activate. The other apps activate automatically.

On Windows

Go to office.com and sign in with your work email address and password.
On the home page, click Install and more, then Install Microsoft 365 apps.
Open the downloaded OfficeSetup.exe and click Yes if Windows asks for permission. Keep your computer online until it says “You're all set.”
Open Word, accept the license agreement if asked, and confirm it shows your work account at the top right.

Installing a single app on a Mac

If you only need to reinstall or add one app, Microsoft provides each Mac app as its own download. After installing, open the app and sign in with your work email address.

On Windows, Microsoft 365 installs as one suite, and individual apps can't be picked from the download page. If you need a specific app added or removed on a Windows PC, contact us and we'll set it up for you.

If an app doesn't activate

It says “Unlicensed Product” or asks you to buy or subscribe. The app is probably signed in with a personal Microsoft account. Sign out (on a Mac: the app's menu, then Sign Out; on Windows: File → Account → Sign out), quit all Microsoft apps, reopen one, and sign in with your work email address.
The Mac asks for access to “Microsoft Office Identities Cache” or “OneAuth” in the Keychain. Enter your Mac's password and click Always Allow. Otherwise it will keep asking you to sign in.
You can't sign in, or you're asked to set up sign-in verification. Contact us and we'll take care of it.
It still shows the old account or won't activate. Restart the computer and sign in again.