Karl Rubottom

Came here to report the same issue. o365: Error on device update! Traceback (most recent call last): File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 431, in _async_add_entity await entity.async_device_update(warning=False) File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 646, in...

I also get the error below: Logger: homeassistant.util.async_ Source: util/async_.py:131 First occurred: 7:49:40 AM (2 occurrences) Last logged: 7:54:40 AM Detected I/O inside the event loop. This is causing stability...

I had to change to the alternate authentication flow.