I am troubleshooting on behalf of another user. We have created a 3rd party update for Java 7 update 71, synched it into the SUP, elected the category and it is displayed in system center 2012 r2 for deployment. User is a full admin in system center, domain admin and local admin to the box they are running this action on. Every attempt to create the package fails with download error 404. The content is already in the WsusContent folder and the UpdateServicesPackages. What are we missing as far as permissions go that is causing this 404 error?