Start with the essentials
Open the apps you need for work, reconnect the devices you use every day, and confirm that your normal sign-in and network routines still work. Check external displays, audio devices, printers, and any specialized hardware that matters to your setup.
Change one thing at a time. A broad cleanup or a long list of tweaks can make it harder to find the actual cause if something behaves differently.
Check backup and storage status
Confirm that your backup ran successfully after the update. Look at available storage if the installer used a large amount of temporary space, but avoid deleting files you do not recognize. Use the built-in storage view or the app that owns the data to identify what can safely be removed.
Keep at least one recent backup before making major system or library changes.
Review privacy and notifications
When a permission prompt appears, decide based on the app and the task it needs to perform. Revisit notification settings if an app becomes unusually noisy, but do not grant broad permissions just to dismiss a prompt. For clipboard tools, review which apps or content should be excluded from history.
Give short-lived work time to settle
Some background tasks may run after an operating system update. Note when a symptom begins, whether it persists after a restart, and which apps are open. If battery use or heat remains unusual, investigate the process list and the specific app before installing a cleaner or changing several system settings at once.
Keep up with relevant Mac changes
MacHabits publishes Mac news and discussion at machabits.info. Use ongoing coverage to spot release follow-ups, then verify troubleshooting steps against current Apple or app-maker instructions. This checklist is a baseline; the right next step depends on the issue you actually observe.