Failed to retrieve refresh_token - no error message returned

[Marius-Adjust]

Hey guys.

When trying to retrieve refresh_token for several client accounts via Adwords API (step described here: https://github.com/googleads/googleads-java-lib/wiki/API-access-using-own-credentials-(installed-application-flow)#step-2---setting-up-the-client-library), we dont get neither token itself nor any error messages. Such behaviour is rather unusual and not something that we've seen before (normally, at least error message of some sort would be returned). We've consulted with Google Ads product team and suspect that clients might have misconfigured something within their accounts, or maybe missed certain steps in implementation. Any chance someone could help us looking into this? Happy to provide account details over a private response.

Thank you!

[Teja Makani]

Hello Marius,

Could you please confirm whether they are following the installed app flow mentioned here while creating the client ID and client secret from the Google API Console Credentials page. If the problem persists they could share the screenshots of the steps they are performing. You could use reply privately to the author option while sharing the information requested. 

Regards,
Sai Teja, AdWords API Team