Difference between WUA IUpdateSearcher and wmic qfe

I am trying to figure out what are the differences between WUA (Windows Update Agent API) IupdateSearcher and wmic qfe list. I get different results when I use: (New-Object -ComObject Microsoft.Update.Session).CreateUpdateSearcher().Search('IsInstalled=1').Updates | Format-Table -AutoSize And when using wmic qfe list: wmic qfe list brief The latter includes updates that the former doesn't and vice versa. Why is that? For example, KB5007273 appears on wmic but doesn't appear on WUA and vice versa, for example, KB4023057 appears on WUA but doesn't appear on wmic

Question by Dor Fellus Cohen on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.