Enable Automatic OS Updates

Created by Cheli

Step‑by‑step guide to configure automatic updates for Windows, macOS, and Linux systems.

30 Items

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Published May 17, 2026

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Checklist Items (30)

Identify Operating System

Determine which OS you are running to follow the correct procedure.

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Check Windows version

Press Win + Pause/Break or go to Settings → System → About.

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Check macOS version

Click Apple menu → About This Mac.

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Check Linux distribution

Run `lsb_release -a` or check /etc/os-release.

Enable Windows Automatic Updates

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Open Settings

Press Win + I or click Start → Settings.

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Navigate to Windows Update

Select Update & Security → Windows Update.

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Set update mode to Automatic

Click 'Advanced options' and choose 'Automatic (recommended)'.

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Configure active hours

Define typical work hours so restarts occur outside that window.

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Verify update history

Click 'View update history' to confirm recent updates installed.

Enable macOS Automatic Updates

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Open System Settings

Click Apple menu → System Settings (or System Preferences on older versions).

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Select Software Update

Find the 'Software Update' pane.

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Turn on Automatic Updates

Check 'Automatically keep my Mac up to date' and expand to enable background downloads, security updates, and system files.

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Set schedule for restarts

Enable 'Allow system software to automatically restart macOS when needed' and set preferred time if prompted.

Enable Ubuntu/Debian Automatic Updates

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Install unattended-upgrades package

Run `sudo apt install unattended-upgrades`.

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Configure automatic updates

Edit `/etc/apt/apt.conf.d/20auto-upgrades` to contain: APT::Periodic::Update-Package-Lists "1"; APT::Periodic::Download-Upgradeable-Packages "1"; APT::Periodic::AutocleanInterval "7"; APT::Periodic::Unattended-Upgrade "1";

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Enable reboot after security updates (optional)

Set `Unattended-Upgrade::Automatic-Reboot "true";` in `/etc/apt/apt.conf.d/50unattended-upgrades`.

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Verify configuration

Run `sudo unattended-upgrade --dry-run --debug` to ensure no errors.

Enable Fedora/RHEL Automatic Updates

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Install dnf-automatic

Run `sudo dnf install dnf-automatic`.

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Edit configuration file

Modify `/etc/dnf/automatic.conf` – set `apply_updates = yes` under [commands] and `download_updates = yes` under [timer].

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Enable and start timer

Run `sudo systemctl enable --now dnf-automatic.timer`.

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Check timer status

Run `systemctl status dnf-automatic.timer` to confirm it is active.

Test Automatic Update Function

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Force a check on Windows

In Settings → Windows Update, click 'Check for updates'.

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Force a check on macOS

In Software Update pane, click 'Check for updates'.

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Force a check on Ubuntu

Run `sudo apt update && sudo apt list --upgradable`.

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Force a check on Fedora

Run `sudo dnf check-update`.

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Document Settings

Record the configured options for future reference or troubleshooting.

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Set Up Backup Before Updates

Create a system restore point (Windows) or Time Machine backup (macOS) or snapshot (Linux) to recover if an update fails.

Monitor Update Logs Periodically

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Windows update log

Open Settings → Windows Update → View update history.

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macOS update log

Open Console app and filter for 'softwareupdated'.

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Ubuntu update log

Check `/var/log/unattended-upgrades/unattended-upgrades.log`.

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Fedora update log

Check `/var/log/dnf.log`.