Important: #83971 - Browser Notification API only works on SSL encrypted connections 

Description 

Google Chrome has deprecated the JavaScript Notification API for unencrypted connections, which triggers warnings. Due to this TYPO3 does not use the LoginRefresh notification here anymore.

See https://goo.gl/rStTGz for more details.

Impact 

The browser notifications for expired login only works on HTTPS.

Affected Installations 

Any installation which does not use HTTPS.

Migration 

Use SSL / HTTPS for the installation and the Notification API will work just like before.