Applies to: Office 365 with Exchange, User Mailbox
Before you install the Exchange package, make sure that your Exchange Online (Through On-Premises Active Directory) meets the prerequisites.
If you are using basic authentication, you must complete the following prerequisite tasks:
Note
Service accounts that have Multi-Factor Authentication (MFA) enabled are not supported.
If you are using modern authentication, you must complete the following prerequisite tasks:
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When you upgrade to Feature Release 20, if you move from basic authentication to modern authentication and you are using a manually created app, you must have the Group.Write.All permission under Microsoft Graph and the full_access_as_app permission under Under Supported Legacy API in the Azure portal.
Note
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Modern authentication requires only one service account. The service account can be an unlicensed Exchange admin user.
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Azure tenants with default security enabled are not supported as the default security setting does not permit configuration of MFA App password for service accounts.
Restoring Messages to PST and MSG Files
Microsoft Outlook 64-bit is required only if you want to restore data to PST file and MSG file. In this case, Microsoft Office 2013 Service Pack 1 (SP1) and above must be installed. For more information see, Description of Microsoft Office 2013 Service Pack 1(SP1).