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How to completely close the macOS Catalina system update tips, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Catalina will automatically prompt for updates from time to time, and red update prompts will be displayed on the system update icon, and notifications will often pop up in the notification center, which will be very annoying.

If you are also troubled by it, follow these steps:

1. Open "system preferences" and click "Software updates".

2. Deselect "automatically keep my Mac up to date".

3. Click the "Advanced" button.

4. Cancel all check boxes.

4. Click "good".

5. Exit the system setup, open the terminal command line, and perform the following three steps:

Sudo softwareupdate-ignore "macOS Catalina"

Defaults write com.apple.systempreferences AttentionPrefBundleIDs 0

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