I am getting the following error when i try triggering a build using the following command:
curl http://jenkins_server:port/jenkins/job/job_name/build?token=token_name>
On 1.625.3, giving Anonymous read access to almost everything worked for me.
UPDATE: I guess I should clarify since this got downvoted. I was able to reproduce that error message, and when I turned on read access for the Anonymous user on all of the access types, it resolved the problem. Just saying...