This guide focuses on creating a clean, new Outlook profile to connect to your mailbox in the Target Tenant (New Company) using your new account.

Phase 1: Close Outlook and Access Mail Settings

  1. Exit Outlook:

    • Ensure the Outlook desktop application is completely closed.

    • Check your system tray (bottom-right on Windows) or menu bar (top-right on Mac) and confirm the Outlook icon is gone, or right-click it and select Exit/Quit.

  2. Open Control Panel (Windows):

    • Click the Start Menu and search for Control Panel.

    • Change the View by setting (top right) to Large icons or Small icons.

    • Click on Mail (Microsoft Outlook).

  3. Manage Profiles:

    • In the Mail Setup window, click the Show Profiles... button.

    • You will see the old profile (usually named "Outlook" or related to the old company).

Phase 2: Create the New Profile

  1. Add New Profile:

    • Click the Add... button.

    • Enter a new, clear name for the profile (e.g., New Company Profile or Target Tenant).

    • Click OK.

  2. New Account Setup:

    • The Add Account wizard will launch.

    • Enter your new work or school email address (e.g., user@newcompany.com).

    • Click Connect.

    • Outlook's AutoDiscover service should find your new mailbox in the Target Tenant.

  3. Sign In:

    • Enter the password for your new Target Tenant account when prompted.

    • If required, complete the Multi-Factor Authentication (MFA) process.

    • Click OK or Done once the connection is verified.

  4. Finalize Settings:

    • You may see a screen showing the offline settings. The default Cached Exchange Mode setting (usually 12 months or 3 months) is typically fine. Click Finish.

Phase 3: Set the New Profile as Default

  1. Set Default Profile:

    • You will return to the Mail window showing all profiles.

    • At the bottom, under When starting Microsoft Outlook, use this profile:

      • Change the selection from Prompt for a profile to be used to Always use this profile.

      • Select your New Company Profile from the dropdown menu.

    • Click Apply, then OK.

  2. Launch and Verify:

    • Open Outlook. It should now automatically use your new profile and connect directly to your new mailbox in the Target Tenant.

    • Verify: Check that your email, calendar, and contacts are accessible and up-to-date.

Important Note on the Old Profile: You can leave the old profile in the list for a few days, but once you confirm the new one is working correctly, you can safely return to the Show Profiles window and Remove the old, non-functional profile to avoid confusion.