You may get prompted repeatedly for your log-in when you try to connect your Outlook.com account to Outlook 2016 or Outlook 2013.
This can happen if you turned on two-step verification on your Microsoft account.
If two-step verification was enabled for the account, you'll need to create an App Password to add the account in Outlook 2016 or 2013. To do this:
Go to the Security Basics page and sign in to your Microsoft account.
Select more security options at the bottom of the page.
Under App passwords, select Create a new app password.
Copy the app password displayed and enter it in the password field when you're connecting your Outlook.com account to Outlook 2016 or Outlook 2013.
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