Hi Balaji, Are you getting the same error message for Web application and Desktop app as well? I am giving the links that are useful for AdWords API and Google Ads API:
https://developers.google.com/adwords/api/docs/guides/authentication https://developers.google.com/google-ads/api/docs/oauth/internals#access_and_refresh_token https://github.com/googleads/googleads-python-lib/tree/master/examples/adwords/authentication https://github.com/googleads/google-ads-python/tree/master/examples/authentication https://developers.google.com/google-ads/api/docs/client-libs/python/oauth-web https://developers.google.com/google-ads/api/docs/client-libs/python/oauth-desktop https://developers.google.com/identity/protocols/oauth2/web-server#handlingresponse You might find the following Stack Overflow posts helpful: https://stackoverflow.com/questions/12710262/google-drive-redirect-uri-mismatch https://stackoverflow.com/questions/11485271/google-oauth-2-authorization-error-redirect-uri-mismatch Thanks, Lakshmi Prathipati Google Ads API Team ref:_00D1U1174p._5004Q2HCtHZ:ref -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog: https://googleadsdeveloper.blogspot.com/ =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads 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 and Google Ads API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/sjsGV000000000000000000000000000000000000000000000QTM8XQ008_5CQM5hQn6lHIEKHQJXrg%40sfdc.net.