Hi Jesse,
Please note that this type of question is more appropriate for Stack Overflow which we regularly monitor as other types of stack exchange services and which would increase your chances to get a faster answer due to its larger audience. According to your exception log, the issue comes from line 16 of RemoteTest.java. So you may want to look at the useApplicationDefaultCredential() method <https://developers.google.com/identity/protocols/application-default-credentials> and make sure that the application default credentials are set appropriately on your machine. More specifically, try using your identity as a proxy to test code calling the API with “gcloud beta auth application-default login” command <https://cloud.google.com/sdk/gcloud/reference/beta/auth/application-default/login> . Alternatively, you could use a manually exported service account p12 key, with useServiceAccountCredential(serviceAccountId, p12PrivateKeyFile) method <https://cloud.google.com/appengine/docs/java/tools/remoteapi/javadoc/com/google/appengine/tools/remoteapi/RemoteApiOptions#useServiceAccountCredential-java.lang.String-java.lang.String-> and for more information on how to generate a p12 format follow the instructions here <https://cloud.google.com/storage/docs/authentication#generating-a-private-key> . Let me know if that works for you. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/333e11c5-d1da-4618-b234-352a5b115e34%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.