Configuring Microsoft 365 email in Outlook using modern authentication (OAuth 2.0) ensures a secure connection between Outlook and Microsoft 365 services. Here’s a step-by-step guide:
Step 1: Verify Modern Authentication Is Enabled
- For Microsoft 365 Admins:
- Go to the Microsoft 365 Admin Center.
- Navigate to Settings > Org Settings > Modern Authentication.
- Ensure Enable modern authentication is checked for Exchange Online.
- For Outlook Desktop:
- Modern authentication is supported in Outlook 2016 and later.
- Ensure your version of Outlook is up-to-date.
Step 2: Open Outlook
- If Outlook is already installed, open the application.
- If not, download and install it from your Microsoft 365 portal.
Step 3: Add Your Microsoft 365 Account
- Go to File > Account Settings.
- Under Account Information, click Add Account.
Step 4: Enter Your Email Address
- Enter your Microsoft 365 email address (e.g., yourname@yourdomain.com).
- Click Connect.
Step 5: Authenticate with Modern Authentication
- Outlook will redirect you to the Microsoft 365 login page.
- Enter your Microsoft 365 credentials and click Next.
- Complete the Multi-Factor Authentication (MFA) process if prompted.
- This process might involve entering a code sent to your phone. Alternatively, you may need to approve a notification in an authenticator app. You could also use another verification method.
Step 6: Wait for Configuration
- Outlook will automatically detect your account settings and configure your mailbox.
- When prompted, click Done.
Step 7: Test the Configuration
- Send a test email to ensure you can send and receive messages.
- Confirm that the mailbox syncs properly, including calendar, contacts, and tasks.
Troubleshooting Tips
- Error during authentication: Verify that modern authentication is enabled for your organization in Microsoft 365.
- Older versions of Outlook: Upgrade to a version that supports modern authentication (Outlook 2016 or later).
- MFA issues: Ensure MFA is set up correctly for your account.
- Cached credentials: Clear saved credentials in the Windows Credential Manager if you’re having login issues.
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