Guidance for UNAUTHORIZED_ACCESS issues



Recently, there have been several forum topics around UNAUTHORIZED_ACCESS. Some examples include:

As this post states:

If you receive a 401 UNAUTHORIZED_ACCESS, the likely cause is that your authentication credentials were missing or incorrect.

We strongly recommend using twurl:

Twurl is like curl, but tailored specifically for the Twitter API. It knows how to grant an access token to a client application for a specified user and then sign all requests with that access token.

Once you are able to successfully make the request using twurl, you can be fairly certain that there was an issue with your authentication credentials and not with access to the Ads API. If you need further assistance, please visit the OAuth category.

ADS API "UNAUTHORIZED_CLIENT_APPLICATION The client application making this request does not have access to this API"
Unable to Fetch Cards by Card URI [UNAUTHORIZED_ACCESS Error]
UNAUTHORIZED_ACCESS - This request is not properly authenticated
Still can't access Ads API
Unable to use start and end time while querying the API
I'm Getting UNAUTHORIZED_ACCESS in updating the name and industry type in sandbox, I think the error might be in the signature



If you’re seeing UNAUTHORIZED_ACCESS issues with the stats endpoints (e.g., GET stats/accounts/:account_id) or with any endpoints that use reserved characters within URLs or POST bodies, please see this post. Please remember to encode reserved characters.

Ensure that you’re encoding reserved characters appropriately within URLs and POST bodies before preparing OAuth signature base strings.