Office 365, University Exchange Account Installation Guides and Best Practices

This document covers all methods of supported installation for known OS for Outlook and 3rd party support.

Table of Contents

  1. Overview
  2. POP3 Support
  3. Installation Instructions
  4. Windows Configuration
  5. macOS Configuration
  6. iOS/iPadOS Configuration
  7. Android Configuration
  8. AppleMail Configuration
  9. Third-Party and IMAP
  10. Adding a second account to Outlook

Overview

University of Illinois email accounts can be used on many devices through the Microsoft Exchange service. This is best handled by the official Microsoft Outlook application, but can also be done through iOS or Android's built-in mail app or any 3rd-party application that supports the OAuth2 protocol.

Before Microsoft started to require OAuth2 (sometimes called Modern Authentication), many email apps used Basic Authentication. The Basic Authentication protocol is considered outdated and insecure, and was disabled for Illinois accounts in August of 2022.

POP3 Support

I want to POP3 my Exchange email to an email client or via another email service, like Gmail.

Unfortunately, the POP3 (Post Office Protocol) protocol is not allowed for connections to Exchange accounts. We do not allow POP3 on the Exchange system for several reasons:

  • The protocol is extremely resource intensive for the mail servers.
  • Mail cannot be restored.
  • POP3 client applications can only be used to download messages from the e-mail server to a single folder (usually the Inbox) on the client computer.
  • The POP3 protocol can't synchronize multiple folders on the e-mail server with multiple folders on the client computer.
  • POP3 also doesn't support public folder access.

Installation and Activation Instructions for Office 365:

Instructions for installing Microsoft Office can be found here: Office 365 Software Installation Instructions. To install a new version of Microsoft Office, it's considered best practice to uninstall any other versions of Microsoft Office that may already be installed on your computer. Instructions for uninstalling Office can be found here for Windows and here for macOS.

Additionally, you may need to deactivate your previous installation of Microsoft Office before installing a new version. To deactivate your previous installation:

  1. Log into the Office 365 Portal.
  2. Click Install and more in the upper-right corner.
  3. Click Microsoft 365 apps.
  4. Click Apps & devices from the left-hand list.
  5. Select Devices under Office.
  6. Click Sign out next to the device you would like to disconnect from your Microsoft Office account.

Configure Outlook Client for Windows

Adding an account to Classic Outlook: Add an email account to Classic Outlook for Windows.

Adding an account to New Outlook: Add an email account to New Outlook for Windows.

Configure Outlook Client for macOS

Adding an account to Outlook for macOS: Add an email account to Outlook for Mac.

iOS/iPadOS Apple Mail

The most reliable method to check your Illinois email on an iOS device is with the Microsoft Outlook app.

The built-in Mail app also supports Modern Authentication. These instructions should be accurate or similar for any iOS version 12 or newer. Illinois accounts can be set up in the stock Mail and Calendar apps that are built in to iOS, by way of the Microsoft Exchange protocol:

  1. Open the Settings app, scroll down until you find Apps, then tap Mail.
    • In older versions of iOS, Mail will be it's own heading in the Settings app, without needing to go to Apps first.
  2. Tap Mail Accounts to see a list of accounts you've already set up in iOS.
  3. Tap Add Account at the bottom of this list, then select Microsoft Exchange from the options.
  4. Enter your full Illinois email address (usually your NetID followed by @illinois.edu) in the Email field. The Description field may automatically fill, though you can change it to any title you'd like it to appear as under in the Accounts list.
  5. Tap Next in the upper-right corner. A popup will appear asking about signing in using Microsoft to discover your Exchange account information, and if you'd like to Configure Manually or Sign In. Select Sign In, then Continue if asked for confirmation.
  6. An Illinois-branded sign in screen will load, with your address already filled in and a prompt for your password. Use the same password as for other Illinois services, and tap the blue Sign in button.
  7. You may be asked to perform 2-factor authentication if you have it configured for your account.
  8. You may be shown a warning about iOS Accounts using Microsoft features; select Accept.
  9. Use the switches to select which iOS apps you'd like to use with your Illinois account, then tap Save in the upper-right corner. You'll be taken back to the list of accounts, which will now include an entry with the title given for Description in step 4.
  10. Navigate to the Mail app (or any other iOS app you selected) to verify that data from your Illinois account appears. It may take several minutes to download all contents of your mailbox.

These settings have been verified to be accurate using a 5th-generation iPad Pro running iOS 18.1.1, but should be similar for any iPhone or iPad with any relatively recent version of iOS.

These steps can be used to add multiple Illinois accounts to the same device, if required.

If you're having trouble sending or receiving mail, especially after changing your password, you may need to remove your Illinois account, and then re-add it.

  1. Open the Settings app, scroll down until you find Apps, then tap Mail.
    • In older versions of iOS, Mail will be it's own heading in the Settings app, without needing to go to Apps first.
  2. Tap Mail Accounts to see a list of accounts you've already set up in iOS.
  3. Select "Exchange" (or whichever entry represents your Illinois account) and choose Delete Account on its page. iOS will warn you about removing things, but data stored on the Illinois mail server will not be lost; this is only removing it from your device.
  4. Then, re-add your account following the steps as listed above.

Android

The most reliable method to check your Illinois email on an Android device is with the Microsoft Outlook app.

If you choose not to use the Outlook app, please note that not all versions of Android have the same built-in mail clients, so support is provided on a best-effort basis.

  • Your Illinois account may appear in Android's Settings app, under an Accounts heading.
  • Your Illinois account may appear in the settings screen of the Email app. Sign out of the account, then sign back in to it.

You can safely disregard any prompt that warns about management policies that may be applied when setting up your account; we do not make use of any of these features, other than allowing you to remotely wipe email from your device. See Mobile Device Remote Wipe and Admin Access

In general, use the following settings where you are prompted:

  • Protocol: Microsoft Outlook or OAuth2
  • Email Address or Username: NetID@illinois.edu
  • Domain: illinois.edu
  • Server: outlook.office365.com

macOS Apple Mail

The Apple Mail application in macOS can reliably be used to access your Illinois email account. These instructions are accurate for recent versions of macOS, 10.14 (Mojave) and newer, though buttons and menu entries may have different names and locations in macOS 13 (Ventura). The built-in Mail app in recent versions of macOS (10.14 Mojave or newer) supports Modern Authentication and can be used with Illinois email accounts.

To add your Illinois account to the macOS Mail app:

  1. Click the Apple icon in the upper-left corner of the screen and choose System Settings...
  2. Click Internet Accounts. This will list any accounts that have been configured in macOS.
  3. Click Add Account... to the lower-right of the accounts list.
  4. Choose Microsoft Exchange as the mail service provider when prompted.
  5. macOS will ask for a name and an email address. The name you enter is how the account will show up in the account list. In the email address field, enter your Illinois email address (NetID@illinois.edu) and click Sign In.
  6. If asked whether you want to sign in using Microsoft, choose Sign In (do not choose Configure Manually).
  7. A window with an Illinois-branded sign-in screen will appear with your email address already filled in and a prompt for your password. Input the same password that you use for other Illinois websites and services, and click Sign In.
  8. Check the boxes for the Exchange account features you'd like to use in macOS, then click Done.

Third-Party, IMAP, and Limitations

We recommend that people use the official Outlook mail application to access their mailbox, but people have the option to use alternative mail clients. The configuration information given below should be helpful for using the IMAP protocol to connect to your Exchange Online mailbox. Any mail clients using the IMAP protocol must be configured to use Modern Authentication. At this time, any mail clients using the IMAP protocol that only support basic authentication will not function.

Note: that IMAP only provides an email connection. You won't receive calendar information through IMAP.

There are many other third-party email applications that may be able to use Modern Authentication. Due to the many softwares, operating systems, and devices that a user can choose from, Technology Services will be unable to test or provide in-depth support for them.

If a third-party application supports OAuth2 but does not offer an Exchange sign-in option, you can try connecting with the IMAP protocol.
Please note that IMAP will not provide calendar event details or mailbox subfolders.

Use the following settings to configure third-party email clients:

  • Email Address/Username: yourNetID@illinois.edu
  • Password: same password as with other University websites and services
  • Incoming mail server: outlook.office365.com
  • Incoming protocol: port 143 and TLS (Thunderbird uses STARTTLS, other unsupported clients use SSL and 993), OAuth2
  • Outgoing mail server: smtp.office365.com
  • Outgoing protocol: requires authentication, port 587 and TLS (Thunderbird uses STARTTLS, other unsupported clients use SSL), OAuth2

Add a second account to Outlook

If you have access to a shared mailbox (resource account), it is possible to add it as a second account to Outlook. This allows you to use your personal email account and a resource account at the same time.

NOTE: If you have the box for "Let me set up my account manually checked" in Advanced options under where you input your account's email address, choose Office365. This box is unnecessary to check due to auto-discover for University exchange accounts.

Method 1:

If you also have send-as permission on the resource account, this process will place messages sent from the resource account into the Sent Items folder of the resource account. Outlook will also create a separate cache file (.OST) for each account, which can really help with performance and file size limits.

Windows (Classic Outlook)

  1. Click File in the upper-left corner.
  2. Under the Account Information heading, you should see your @illinois.edu account already listed as a Microsoft Exchange entry. Click the + Add Account button below this.
  3. In the window that appears, enter the email address of the resource account you'd like to sign in to, then click Connect.
  4. Another window will appear with an Illinois-branded sign-in page, with the resource account's address already filled in.
  5. Click the link that says Sign in with another account, which will open a new sign-in window.
  6. Enter your own account's e-mail address, click Next, and enter your own account's password, rather than the password to the resource account.
  7. Click Sign in button. You may be prompted to perform 2-factor authentication if it is enabled for your account.
  8. The Illinois-branded sign-in window will close, and Outlook should report that the account was successfully added.
  9. Click Done, then completely close Outlook. When it is next opened, the resource account will populate.

macOS

Adding a shared account (New Outlook for Mac):

  1. With Outlook for macOS open, click on the word Outlook in the upper left-hand corner just to the right of the Apple icon.
  2. Select Settings... from the drop-down menu that appears.
  3. In the new window that pops up, click on Accounts under the Personal Settings section.
  4. A window with the word Accounts in the upper left should appear with your own personal account listed.
  5. Under the text in the second larger box, there should be three buttons. Click on the button labeled Delegation and Sharing.
  6. A new window will show up with two sections in the upper middle. Click on Shared with me and in this section click on the + icon in the lower left.
  7. A window should show up titled Open Mailbox... - type the address or the display name of the account you would like to add.
  8. Click on the account, which should highlight, and then click Add in the lower right.
  9. Click Done in the lower right-hand corner and close the accounts window. You should now see the second account added.

Adding a shared account (Classic Outlook for Mac):

  1. Open a shared Mail, Calendar, or People folder in Outlook for Mac - Microsoft Support

Adding a second account

  1. With Outlook for macOS open, click on the word Outlook in the upper left-hand corner just to the right of the Apple icon.
  2. Select Settings... from the drop-down menu that appears.
  3. In the new window that pops up, click on Accounts under the Personal Settings section.
  4. A window with the word Accounts in the upper right should appear with your own personal account listed.
  5. In the lower left-hand corner click on the + icon and select New Account....
  6. An add account window will pop up. Enter the full address of the account you want to add.
  7. A new window will show up asking for the account's password - enter that here.
  8. The new account should now be added

Method 2 (Classic Outlook Only):

If you have Send As permissions on a resource account, this process will place messages sent from the resource account into your Sent Items folder. All mailboxes will be cached to the same file (.OST) which can have a negative impact on performance and reliability.

  1. In Outlook, Click File in the upper-left corner.
  2. Click Account Settings, then Account Settings again. You should see your account already listed.
  3. In the Account Settings window that opens, select your account, then click Change.
  4. Click on More Settings.
  5. In the Microsoft Exchange window that opens, click the Advanced tab.
  6. Next to Open these additional mailboxes, click Add. Then, type in the name or email address of the resource account and click OK.
  7. Your resource account should now be in the list of additional mailboxes. Click OK, then restart Outlook to open the extra mailbox.


Keywords:
Outlook, Office, 365, Office365, Install, Installation, setup, iOS, android, IMAP, MacOS, Mac, Windows, iPad, Applemail 
Doc ID:
150086
Owned by:
Office 365 G. in University of Illinois Technology Services
Created:
2025-04-24
Updated:
2025-05-13
Sites:
University of Illinois Technology Services