Google Drive API Service Account

Question

I am trying to provide access to folders that have been created using a Rest API call using a Service account (The folders are created and the return values are proper).. but when I try to add a user delegation (using the sub in the JWT header), i keep getting a unauthorized user. I have checked the Service Account creation and everything seems right there. Any pointers?

Answer 1

Make sure that your request includes the Authorization header with a valid token. Try also to refresh your access token using the long-lived refresh token. If this fails, direct the user through the OAuth flow, as described in Authorizing Your App with Google Drive.

Check these links:

• Google drive service account and "Unauthorized client or scope in request"
• Ownership of Google Drive files and Service Account using API