Enable Exchange Online for modern authentication

Modern authentication in Office 365 enables authentication features like multi-factor authentication (MFA) using smart cards, certificate-based authentication (CBA), and third-party SAML identity providers. Modern authentication is based on the Active Directory Authentication Library (ADAL) and OAuth 2.0.

By default, modern authentication isn't enabled in Exchange Online, but you can enable it.

Enable modern authentication in Exchange Online

  1. Connect to Exchange Online PowerShell as shown here.

  2. Run the following command in Exchange Online PowerShell:

    Set-OrganizationConfig -OAuth2ClientProfileEnabled $true
  3. To verify that the change was successful, run the following command in Exchange Online PowerShell:

    Get-OrganizationConfig | Format-Table -Auto Name,OAuth*

Next steps

When you enable modern authentication in Exchange Online, we recommend that you also enable it in Skype for Business Online. For instructions, see https://aka.ms/SkypeModernAuth.

Note that modern authentication is enabled by default in SharePoint Online.

See Also

Using Office 365 modern authentication with Office clients

How modern authentication works for Office 2013 and Office 2016

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