I keep getting a

401. That’s an error.

Error: invalid_client


when trying to authenticate using Google .

I went ahead and reviewed my Owin Google registration and even though  about creating my own middleware using the source code provided directly by Google and and use Owin IAuthenticationManager to integrate the result back into the pipeline; but that was unnecessary. All that was required is deleting the previous OAuth 2.0 client ID and creating a new one @ https://console.developers.google.com/

Anyhow I should be able to get a free weekend soon and try writing my own custom Google middleware for Owin.  shouldn’t take more than a few hours to cover most corners 🙂