Sign out on your Mac #
- Choose Apple menu > System Preferences.
- Click Apple ID, then click Overview. If you use macOS High Sierra or earlier, click iCloud.
- Click Sign Out.
- If you want to a keep a copy of your iCloud data on your Mac before you sign out, make sure that you select the appropriate checkboxes. Then click Keep a Copy.
- If you want to keep a copy of your Safari passwords on your Mac, click Keep on This Mac.