Hello,
About 3 weeks ago we started seeing this error when we refresh the access
token for many random accounts, { "error" : "invalid_grant" }. We never
had any problems refreshing access tokens up until now. Also, not all
accounts are having problems refreshing their tokens; many refresh just
fine. To temporarily fix the issue we have been reauthorizing each account,
but other accounts start to have the same problem. The only information I
could find on the forum is that the refresh token has manually been
revoked, which doesn't make sense to me. I've read through the
documentation at
"https://developers.google.com/adwords/api/docs/guides/authentication"; and
it looks like our TokenUrl, AuthUrl and Scope are up to date. Any help is
greatly appreciated, thanks.
Get Authorization Code:
https://accounts.google.com/o/oauth2/auth?client_id=XXXXX&redirect_uri=XXXXXX&scope=
https://www.googleapis.com/auth/adwords
&response_type=code&access_type=offline&approval_prompt=force";
Below is an example of the url and parameters we are using to retrieve
initial access and refresh token:
https://www.googleapis.com/oauth2/v3/token?code=XXXXXXXXXXXXX&client_id=XXXXXXXXX&client_secret=XXXXXXXXX&grant_type=authorization_code&redirect_uri=XXXXXXXX
Below is an example of the url and parameters we are using to refresh
access tokens:
https://www.googleapis.com/oauth2/v3/token?refresh_token=XXXXX&client_id=XXXXX&client_secret=XXXXX&grant_type=refresh_token
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