On my MacBook Air (13-inch, 2017) with macOS 10.15.4 (19E287), I am shown a software update that I cannot seem to install and that I want to know more about.

How can I find out more information about such a pending software update and eventually install it?

Here is a GIF animation for further context: https://i.stack.imgur.com/NqFA4.jpg

  • 1
    try softwareupdate -l in termal first to see what comes up
    – adamxweb
    May 14, 2020 at 11:59
  • It's saying that no new software is available.
    – orschiro
    May 14, 2020 at 12:12
  • Could you try defaults read ~/Library/Preferences/com.apple.preferences.softwareupdate.plist Also have you recently updated you OS / when and how did the issue first start? And can you paste the result?
    – adamxweb
    May 14, 2020 at 12:25
  • This is giving me { LatestMajorOSSeenByUserBundleIdentifier = "com.apple.InstallAssistant.Catalina"; ProductKeysLastSeenByUser = ( "061-90745" ); } and yes indeed, I recently upgraded to Catalina!
    – orschiro
    May 14, 2020 at 12:44

1 Answer 1


From the provided result, the Security update "061-90745" is an update still trying to be installed for Mojave!

code example from apple security update

Clear the old update with defaults delete com.apple.preferences.softwareupdate LatestMajorOSSeenByUserBundleIdentifier && softwareupdate --list

It removes the old incompatible string then refreshes the list from Apple

Congrats on the move to Catalina!

  • Thanks! But inside /Library/Updates I only have index.plist and ProductMetadata.plist. No such folder.
    – orschiro
    May 14, 2020 at 13:03
  • Just updated the answer with a command to delete the string directly from the software update pending list. Let me know if that works!
    – adamxweb
    May 14, 2020 at 13:19

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