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If you chose a Microsoft account, these options on the Sync your settings tab are enabled by default. (If you use a local account, you can't sync settings - sorry.)
In all, there are 12 separate options shown here, and all are enabled. You might want to disable some of these options. For example, you might want the background on your desktop PC to be different from the background on your notebook, so that you can tell at a glance which is which if you're using a remote connection. In that case, move the Desktop personalization slider to the left (Off) position.