Unable to refresh access token : response is “unauthorized_client”
I am getting an error when I try to refresh access token: 400 Bad Request {error : "unauthorized_client"} From the Google token URI: { "error" : "invalid_request" } I read this answer here and the official Google documentation (which describes how a POST request should look) and I don't see any difference. I captured my POST request (secrets removed): POST /SHOWMERAWPOST HTTP/1.1 User-Agent: Google-HTTP-Java-Client/1.10.3-beta (gzip) Pragma: no-cache Host: requestb.in Content-Type: application/x-www-form-urlencoded; charset=UTF-8 Content-Length: 175 Connection: keep-alive Cache-Control: no