To set up Outlook 2016/2019:
Navigate to Windows Control Panel > Mail > Show Profiles > Add. Specify your Profile Name and click OK.
On the Auto Account Setup page type your name, primary email address, and your mailbox password, then click Next. If Your Name and email address are already there and you do not see the password field, empty the E-mail Address field. Password field should populate after that.
Outlook 2016/2019 will start configuring your account. When you get a security prompt, check the box Don’t ask me about this website again and then click Allow.
Windows Security window might then prompt your username and password. Enter your primary email address in the Username box and type your mailbox password and click OK. If it doesn't accept login/password, and password works for Webmail, please refer to the Knowledge Base article for Options For Fixing The Outlook 2016 Credential Prompt Error With Office Apps & Office 365 Desktop Application Customers
Outlook 2016/2019 will discover your email server settings and finish configuration of your email account. Once you see all the steps as completed, you can click Finish. Now you can open your new profile in Outlook 2016/2019.