Outlook on the web - Sign Into Two Different Microsoft 365 Accounts on the Same Computer at the Same Time

Many departments on campus will access and manage secondary accounts for departmental messaging and collaboration purposes. While there are multiple methods to manage secondary accounts (i.e. Outlook, Apple Mail, Thunderbird, Mobile Devices, etc.), this page will step through the process to sign into two different O365 accounts on the same computer at the same time through your preferred web browser.

Back to Outlook on the web

Internet Explorer:
1. Open Internet Explorer to log into one Microsoft 365 account.
2. Click Tools option in top toolbar.
3. Hover your mouse over the Safety option and click InPrivate Browsing.
4. After the InPrivate Browsing window opens, log into your other Microsoft 365 account.
5. The keyboard shortcut to open an InPrivate Browsing window is Ctrl, Shift, and the P key.
Mozilla Firefox:
1. Open Mozilla Firefox to log into one Microsoft 365 account.
2. Open the menu (the three lines in the top right corner) and select New Private Window.
3. After the New Private Window opens, log into your other Microsoft 365 account.
4. The keyboard shortcut to open a New Private Window is Ctrl, Shift, and the P Key.
Google Chrome:
1. Open Google Chrome to log into one Microsoft 365 account.
2. Open the menu (the three lines in the top right corner) and select New Incognito window.
3. After the New Incognito window opens, log into your other Microsoft 365 account.
4. The keyboard shortcut to open a New Incognito window is Ctrl, Shift, and the N Key.
Safari:
1. Open Safari to log into one Microsoft 365 account.
2. Select the File option in the top left corner and select New Private Window.
3. After the New Private window opens, log into your other Microsoft 365 account.
4. The keyboard shortcut to open a New Private window is Control, Option, and the P key.