I've been seeing this as well over the last 24-36 hours.  We've been on the 
Ads API v10 using the .NET client library for several weeks with zero 
authentication issues.  Yesterday, we began seeing a few of these "Request 
is missing required authentication credential" errors.  99.9% of our 
requests are going through just fine, so this feels like a random bug on 
Google's end.

On Thursday, May 12, 2022 at 9:00:22 AM UTC-4 d...@adchieve.com wrote:

> Hello,
>
> Since today our Desktop application is experiencing some unexpected issues 
> with regards to the error:
> vendor/google/gax/src/ApiException.php - 139 - {
>     "message": "Request is missing required authentication credential. 
> Expected OAuth 2 access token, login cookie or other valid authentication 
> credential. See https:\/\/developers.google.com
> \/identity\/sign-in\/web\/devconsole-project.",
>     "code": 16,
>     "status": "UNAUTHENTICATED",
>     "details": [
>         {
>             "@type": "request-id",
>             "data": "[[REQUESTID(can be provided)]]"
>         }
>     ]
> }
>
> The weird thing is that our application uses the php libraries provided by 
> Google and most of the time requests go through fine, but then sometimes 
> the same requests fail with above error.
> Authentication is done the same as well, we use the provided libraries to 
> create the credential objects and client.
>
> This only started happening today without us changing any of our code.
>
> Hopefully someone can shed some light on this situation,
> Teun
>
>
>

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        • ... 'Google Ads API Forum Advisor' via Google Ads API and AdWords API Forum

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