# Red Hat knowledge base ## Red Hat Knowledge Base 1. [The account is missing an active Red Hat subscription.](https://www.manageengine.com/patch-management/knowledge-base/inactive_redhat_subscription.html?vmp) 2. [Download permission required. Contact organization admin.](https://www.manageengine.com/patch-management/knowledge-base/redhat_download_permission_required.html?vmp) 3. [Unable to upload files from the Nominated System (NS) to the Red Hat portal](https://www.manageengine.com/patch-management/knowledge-base/redhat_file_upload_to_server_failure.html?vmp) 4. [Unable to reach https://access.redhat.com/downloads](https://www.manageengine.com/patch-management/knowledge-base/redhat_login_page_error.html?vmp) 5. [Red Hat portal might be temporarily down.](https://www.manageengine.com/patch-management/knowledge-base/redhat_portal_down_error.html?vmp) 6. [Issues found in the nominated system while creating cache repository](https://www.manageengine.com/patch-management/knowledge-base/redhat_system_nomination_issues.html?vmp) 7. [Cannot proceed with scan/deployment since Yum is already running](https://www.manageengine.com/patch-management/knowledge-base/redhat_yum_already_running.html?vmp)