d by OIDC. The 4th is a usecase-specific one
  scope: &#39;openid profile email voucher&#39;,
}</code></pre><p>As an alternative, you can set the same property directly with the OAuthService:</p>
<pre class="line-numbers"><code class="language-TypeScript">this.oauthService.silentRefreshRedirectUri = window.location.origin + &quot;/silent-refresh.html&quot;;</code></pre><p>Please keep in mind that this uri has to be configured at the auth-server too.</p>
<p>This file is loaded into the hidden iframe after ge