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I just updated my Macbook to the latest version of Mac OS: Catalina 10.15.4.

However, I noticed that in the system preferences, there is a red dot on the software update icon, but after clicking it, it says it is already up to date...

So I want to know why it is here and how can I get rid of the red dot?

Thanks in advance! screenshot1 screenshot2

Fortunately, after upgrading to 10.15.5, the red dot disappears...

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defaults delete com.apple.systempreferences AttentionPrefBundleIDs; killall Dock

This can get rid of it but it will return.

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  • Thanks for your reply. Yes, I also updated from Mojave to Catalina 10.15.4 directly because I have heard about many bugs in the previous version from my friends...
    – Chuan Chen
    Mar 29 '20 at 15:59
  • See also this popular answer apple.stackexchange.com/a/344279/53510
    – Ryan
    Nov 20 '20 at 16:07
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Try running softwareupdate -ia in terminal to force it to realise it's got them all / install any you may have missed.

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  • Same here, updated straight from latest 10.14.x to 10.15.4, -ia doesn't make a difference. softwareupdate --list shows nothing to update. softwareupdate --dump-state log doesn't seem to contain any pending updates either
    – Stefan L
    Mar 28 '20 at 20:04
  • @Pete Thanks for your comment, but it seems does not work...
    – Chuan Chen
    Mar 29 '20 at 16:03
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Permanent solution (close "settings" window first):

Via Terminal:

rm ~/Library/Preferences/com.apple.preferences.softwareupdate.plist
defaults delete com.apple.systempreferences AttentionPrefBundleIDs
defaults delete com.apple.systempreferences DidShowPrefBundleIDs
killall Dock
0

I can't take the credit but saw the solution from Macrumors forum:

Simply delete the following file
~/Library/Preferences/com.apple.preferences.softwareupdate.plist

Exactly same situation. This solves my problem after me upgrading to Catalina.

Reference:
https://forums.macrumors.com/threads/software-updates-badge-wont-disappear-after-the-update-to-catalina-10-15-4.2228115/post-28312219

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