The primary authentication method recommended by the Nest Home Assistant integration called "Desktop", "Installed App" or "OOB" auth has been deprecated.
See the github issue for details on temporary workarounds and the longer term solution.
Background
The OAuth out-of-band flow was designed to support native applications that cannot support a redirect URI like a Web application, which was convenient for Home Assistant since it is difficult for end Home Assistant users to set up SSL certificates and DNS needed for a secure Web endpoint. However, Google has deprecated the OOB flow as it introduces a phishing risk. New users are no longer allowed to create new Desktop auth credentials and existing users will no longer work starting October 3, 2022.
Nest Desktop Auth Deprecation
https://alerts.home-assistant.io/#nest.markdown
The primary authentication method recommended by the Nest Home Assistant integration called "Desktop", "Installed App" or "OOB" auth has been deprecated.
See the github issue for details on temporary workarounds and the longer term solution.
Background
The OAuth out-of-band flow was designed to support native applications that cannot support a redirect URI like a Web application, which was convenient for Home Assistant since it is difficult for end Home Assistant users to set up SSL certificates and DNS needed for a secure Web endpoint. However, Google has deprecated the OOB flow as it introduces a phishing risk. New users are no longer allowed to create new Desktop auth credentials and existing users will no longer work starting October 3, 2022.
via Home Assistant - Alerts https://alerts.home-assistant.io
May 12, 2022 at 04:04PM