Hi, The unauthorized_client error usually occurs when you are using incorrect OAuth2 credentials. Could you check if you have provided the correct clientId, clientSecret and refreshToken? Could you try generating a new refresh token by following the instructions provided here <https://github.com/googleads/googleads-php-lib/wiki/API-access-using-own-credentials-(installed-application-flow)> ? Could you also try the CURL request provided below and see if you are able to generate the access tokens? That will help you confirm if your OAuth2 credentials are valid or not.
curl https://www.googleapis.com/oauth2/v4/token \ -d refresh_token=MCC_refresh_token \ -d client_id=your-client-id \ -d client_secret=your-client-secret \ -d grant_type=refresh_token Regards, Shwetha, AdWords API Team. -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and Google+: https://googleadsdeveloper.blogspot.com/ https://plus.google.com/+GoogleAdsDevelopers/posts =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/adwords-api. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/70e4c510-d82f-467e-a334-217148eec207%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
