Is Apple Mail on my iMac compatible with Outlook?
How can you set up your Gmail, Apple Mail, or other third-party mail application?
Various non-Microsoft applications will have their own steps for connecting to your Outlook.comemail account using modern authentication methods. See our help article - Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps. However, you may need to contact the creators of those applications to provide you with instructions. In many cases, simply removing and re-adding your account with the latest version of that application will configure it to use modern authentication methods.
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iMac 27″, macOS 10.12