Hi Bret,
Could you confirm if your App.config / Web.config have the following keys
in it?
<add key='AuthorizationMethod' value='OAuth2' />
<add key='OAuth2ClientId' value='xxxxxx.apps.googleusercontent.com' />
<add key='OAuth2ClientSecret' value='xxxxxx' />
<add key='OAuth2RefreshToken' value='xxxxxx' />
You could also provide this at runtime by setting the appropriate values to
user.Config object as shown in this wiki article
<https://github.com/googleads/googleads-dotnet-lib/wiki/Understanding-App.config#introduction>,
but this needs to be done before you make a report download call.
Let me know if this doesn't resolve your issue.
Cheers,
Anash P. Oommen,
AdWords API Advisor.
On Friday, September 9, 2016 at 4:17:12 AM UTC-4, Bret Williams wrote:
>
> Hi Josh - I upgraded our AdWords library from v201601 to v201603 and we're
> now getting this error. Did the authentication change in this release?
>
> System.ArgumentNullException: Value cannot be null.
>
> Parameter name: Looks like your application is not configured to use
> OAuth2 properly. Required OAuth2 parameter RefreshToken is missing. You may
> run Common\\Utils\\OAuth2TokenGenerator.cs to generate a default OAuth2
> configuration.
>
> at
> Google.Api.Ads.Common.Lib.OAuth2ProviderBase.ValidateOAuth2Parameter(String
> propertyName, String propertyValue)
>
> at
> Google.Api.Ads.Common.Lib.OAuth2ProviderForApplications.RefreshAccessToken()
>
> at AdWords.Jobs.Google.GoogleReportsJob.GetAPIUser(AdProvider
> credential, String clientCustomerId)
>
> at AdWords.Jobs.Google.GoogleReportsJob.ProcessReport(AdReportJob&
> adReportJob)
>
>
>
> at
> Google.Api.Ads.Common.Lib.OAuth2ProviderBase.ValidateOAuth2Parameter(String
> propertyName, String propertyValue)
>
> at
> Google.Api.Ads.Common.Lib.OAuth2ProviderForApplications.RefreshAccessToken()
>
> at AdWords.Jobs.Google.GoogleReportsJob.GetAPIUser(AdProvider
> credential, String clientCustomerId)
>
> at AdWords.Jobs.Google.GoogleReportsJob.ProcessReport(AdReportJob&
> adReportJob)
>
>
> On Tuesday, April 12, 2016 at 8:39:26 AM UTC-5, Josh Radcliff (AdWords API
> Team) wrote:
>>
>> Hi Pravin,
>>
>> You mentioned "I want to generate refresh token each time", but you only
>> need to generate a *refresh token* *once* for each user whose
>> credentials you want to use. When generating the refresh token, you should
>> set the *access_type* to offline
>> <https://developers.google.com/identity/protocols/OAuth2WebServer#offline>
>> so
>> that you can retrieve new *access tokens* without reprompting the user.
>>
>> If you generate a new *refresh token* every time, you are likely to run
>> into the limit on the # of active refresh tokens -- see section 4 -
>> "Refresh the access token, if necessary"
>> <https://developers.google.com/identity/protocols/OAuth2#basicsteps> of
>> the OAuth guide.
>>
>> Thanks,
>> Josh, AdWords API Team
>>
>> On Tuesday, April 12, 2016 at 6:49:27 AM UTC-4, Pravin Yadav wrote:
>>>
>>> Hi,
>>>>
>>>
>>> Yes i generated it manually using OAuth2 Console's
>>> OAuth2ClientId & OAuth2ClientSecret and then it stored it in database and
>>> used it in my application but it temporary it's not useful in web service
>>> it need to generate automatically after once run Web Service
>>> code because my service execute back-end(background Process run anytime)
>>> and it's offline.
>>>
>>> in my service i want generate refresh token each time when my
>>> service run so token need to generate automatically (offline) and replace
>>> each time it in table's column of my database.
>>>
>>> Some days ago this work properly worked with above(Delegate)
>>> code but now it not generated refresh token (generated only access token) i
>>> need refresh token.
>>>
>>> So please reply the same.
>>>
>>>
>>> Thanks & regards,
>>>
>>> Pravin Yadav
>>>
>>>
>>>
>>
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