Hi Pravin,
The OAuth 2.0 spec <http://tools.ietf.org/html/rfc6749#section-5.2> provides
the following description for that error:
* invalid_grant*
The provided authorization grant (e.g., authorization
code, resource owner credentials) or refresh token is
invalid, expired, revoked, does not match the redirection
URI used in the authorization request, or was issued to
another client.
I would recommend verifying that the redirect URI specified on your project
at https://console.developers.google.com matches what you're using in your
requests, and also verify that the refresh token has not been revoked. You
might also want to check out the README on our github repo
<https://github.com/googleads/googleads-dotnet-lib/blob/master/examples/AdWords/CSharp/OAuth/README.md>
for
more details and code examples.
Thanks,
Josh, AdWords API Team
On Wednesday, April 6, 2016 at 5:53:09 AM UTC-4, Zweitze wrote:
>
> You want to generate a refreshtoken once, store that in the database, then
> use that refreshtoken with software you wrote?
>
> Consider using OAuth2 for applications.
> The .NET client library has (or used to have) a sample application called
> OAuthTokenGenerator. I created some refreshtokens with that application,
> store that in a database and have software using those tokens every day.
>
> OAuthTokenGenerator may not be present in the current .NET library (no
> idea actually), I use a copy from a library three years old. Since the
> authentication is not bound to AdWords API versions, it is still working.
>
> I hope this helps.
>
>
> On Wednesday, April 6, 2016 at 9:34:26 AM UTC+2, Pravin Yadav wrote:
>>
>> Hi,
>>
>> I am using Google AdWords Version v201603 in that taking adwords account
>> data *Offline *using *Dot Net Web Service* that time i trying to *generate
>> tokens* offline using(delegate) and store that in Database and then
>> accessing this tokens for data retrieve that time access token generating
>> each time correctly but refresh token not generating.
>>
>> follow is code i am using:
>>
>> oAuth.OnOAuthTokensObtained += delegate(AdsOAuthProvider pp)
>>
>> {
>>
>> OAuth2ProviderForApplications oAuth =(provider as
>> OAuth2ProviderForApplications);
>>
>> string refresht = oAuth.RefreshToken;
>> string accesst = oAuth.AccessToken;
>> Date updateo= oAuth.UpdatedOn;
>> int expire = oAuth.ExpiresIn;
>>
>> }
>>
>>
>> Its throwing following error:
>>
>> * Failed to refresh access token.*
>> * {*
>> * "error" : "invalid_grant"*
>> * }*
>>
>> Please suggest me any another way or any correction/mistaken in existing
>> code to generate offline Refresh Token.
>>
>>
>> Thanks & Regards,
>>
>> Pravin Yadav
>>
>>
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