title: How to implement Single Sign On (SSO) in angular 2 apps with Identity server 4?
body: <p>I am developing some angular 2.x based application with Identity Server 4 (in asp.net core) as authentication server. Server setup, application authentication is done but now requirement is to support SSO to avoid login in each application. </p>
  
  <p>To do so I am storing authentication token in local storage  and trying to reuse in different angular 2 application but it does not work. </p>
  
  <p>What is the standard way to do SSO here with Identity server 4 and any types of clients with any browser?</p>
  
  <p>Thanks in advance.</p>