Summary
This article explains how to update your Mac Desktop Outlook App for the USNH unified M365 environment. There are two parts:
How-To
Task: To remove the old campus-based account.
Instructions
Step 1 - Open the desktop-based Outlook Application for Mac
Step 2 - Go to Outlook > Settings in the upper left menu next to the Apple icon

Step 3 - Select the "Accounts" tab in Quick Settings

Step 4 - Under the accounts listing, select your campus account and click the Manage dropdown menu and select Remove account. This will remove the account from the desktop-based Outlook application on your computer but will not impact the email on the web. You may have other accounts listed in the accounts listing (i.e. Gmail or iCloud) - these accounts are not impacted by this process and should be left as is.

Step 5 - Quit (⌘Q) out of the Outlook Application.
Outcome
Your old campus-based account will be removed from the desktop-based Outlook Application.
Back to top
Task: To add the USNH unified M365 email and calendar accounts.
Instructions
Step 1 - Open the desktop-based Outlook Application for Mac.
Step 2 - Go to Outlook > Settings in the upper left menu next to the Apple icon:

Step 3 - Select the "Accounts" tab in Quick Settings

Step 4 - Under the accounts listing, click the Add Account option below your USNH account

Step 5 - At the Welcome Screen, enter your username@usnh.edu (fully qualified username, example: jbd2519@usnh.edu) into the Email address prompt box and select "Continue"

Step 6 - On the USNH Enter Password page, enter your password and click Sign In. If required, approve the login attempt with your preferred method of multi-factor authentication (MFA).
Note: If a server address is needed, it is outlook.office365.com
Step 7 - You will be passed back to the Outlook Application and will see a green check mark indicating that your account has been successfully linked. When finished, click Done

Outcome
Your USNH unified M365 email and calendar accounts will be added to the desktop-based Outlook Application.
Back to top
Further Readings
Outlook: Adding your USNH Email Account to an iOS Device
Outlook: Adding an Existing Shared Mailbox to your Outlook Desktop Application
Need additional help?
Submit an Email Services support request with as much detail as possible, or 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.
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!