I’ve double checked my client id and client secret are correct, and restarted several times. Still running in to this issue. After submitting the pin code I receive from Nest, I see the errors “Invalid flow specified” and Unknown error validating code"
How can I troubleshoot further?
You don’t have same error as OP’s why not create a new thread?
Any error log?
You can enable nest log to get more information
# Logger
logger:
default: info
logs:
homeassistant.components.nest: debug
homeassistant.components.http: debug
nest: debug
It started randomly working after a few days and a couple reboots. I didn’t make any other changes.