Introduction Due to enabling Hide Existence of Unauthorized Resources, an unauthorized user’s request will return 404 instead of 401 or 403 when installing from maven repos.By Default, the command “mvn install” will be requested by anonymous at first, and Artifactory will return a 404 not found error when the “Hide Existence of Unauthorized Resources” is enabled. Then Artifactory won’t be requested again by the authorized users though the settings.xml is configured and used correctly, because it thinks there are no artifacts which indicated by the 404 not found error from the first anonymous request. Resolution The resolution of this error is to disable the Hide Existence of Unauthorized Resources. Then after the first anonymous request, Artifactory will return 401 or 403 error, which makes the maven client requests again by the authenticated user, and it could install artifacts successfully this time.