Office 365: Installing O365 in a MacOS


This article provides instructions on how to install Microsoft Office on a Mac operating system.



Task: To install Microsoft Office on a Mac.



Step 1 - In a web browser, go to

Step 2 - If you are not automatically signed in to Microsoft 365 Online, the Microsoft Sign-in window displays. Type in your (example:, click Next.

Microsoft Sign in screen


Step 3 - When the USNH password screen opens, type in your USNH Password, and click SubmitIf required, verify your identity with one of your multi-factor authentication (MFA) sign-in methods.

Step 4 - On the Welcome to Microsoft 365 page, click Install and more in the upper right, then choose Install Microsoft 365 apps.

Install and more drop-down with option to "Install Microsoft 365 apps"


Step 5 - On the next page, click Install Office to download the installation files to your downloads folder. If a pop-up window asking permission to continue this download displays, click Allow.

M365 Apps & devices page with box around "Install Office" button


Step 6 - Open the downloaded installation folder, double-click the Office Installer icon to launch the installation wizard.

Step 7 - Click Continue.


Step 8 - On the Office License Terms window, click Continue.

Step 9 - Click Agree when prompted by the terms of the license agreement.

Step 10 - Select your install location, or leave the default location selected, and click Install.

Step 11 - You maybe prompted to close your browser before the installation begins. Click Close Application and Install.

Step 12 - Depending on your security settings, you might be prompted to enter your computer password to install the software. Enter your computer password and click Install Software.

Step 13 - When installation is finished, click Continue.

Step 14 - On the successful installation window, click Close.



Office 365 is successfully installed. Check your dock or applications list to find the programs.


Next Steps

When you initially launch any of the Office applications, the Microsoft Sign-in window displays, enter your and the same password that you used on the initial download site. If required, verify your identity with one of your multi-factor authentication (MFA) sign-in methods.

Microsoft Sign in screen


Further Readings

Office 365 for Windows

Office 365: Frequently Asked Questions (FAQ)


Need additional help?

For assistance concerning site creation, content sharing, file synchronization, or other common SharePoint, OneDrive, Teams, or Office app activities, we recommend our Microsoft 365 Learning sites:

Learn more about the great tools our Microsoft 365 Learning sites offer!

Visit the Technology Help Desk Support page to locate your local campus contact information or to submit an online technology support request.  For password issues you must call or visit the Help Desk in person.  

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Article ID: 2547
Fri 10/2/20 5:06 PM
Mon 5/6/24 11:04 AM
Applicable Institution(s):
Keene State College (KSC)
Plymouth State University (PSU)
University of New Hampshire (UNH)
USNH System Office