Remediation in the Windows defender security portal. Couple of Questions.

Couple of very basic questions about Remediation in the Windows Defender Security Portal.

1. Can we actually updates the applications that are outdated on our endpoints from within the security.portal.com ? or does remediation only give of a current list of exposed/outdated devices?

2. What does the message "Intune(Rejected) mean? for Ticket Status and how do we rectify this?