The relevance for the Administrative Login Needed fixlet is:
The description explains:
The listed computers have a pending operation scheduled in the registry under the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce key. This pending operation is scheduled to be run the next time an administrative user logs into the operating system.
Usually, the pending operations are required to complete an installation that requires a restart. A user should log on to these computers as soon as possible in order to ensure that all patches and applications install completely.
You can look at the values of this RunOnce key with relevance, like in this analysis: http://bigfix.me/analysis/details/2994785
Info on the pending login inspector is on this page: (not very helpful) https://support.bigfix.com/inspectors/World%20Objects_Any.html