Hi, The '401 Unauthorized' error usually occurs when you are using incorrect OAuth2 credentials from the target accounts perspective. Could you check if you have provided the correct client credentials (client Id, client secret) and the OAuth token? If you are not sure, you could try generating a new refresh token by following the instructions provided here <https://github.com/googleads/googleads-php-lib/wiki/API-access-on-behalf-of-your-clients-(web-flow)> for the web app flow.
To verify that your credentials are correct, you could also try the CURL request provided below and see if you are able to generate the access tokens. If the credentials are correct, you should get an access token for the below request. 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 Please give this a try and let me know how it goes. Regards, Sreelakshmi, 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/61d99c26-5ef9-4b55-9d4f-89cbca409542%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
