I have a laptop and a normal PC that both have Windows 10. And I've often noticed when I change the background on my PC a few minutes later, when I look on the laptop, the background changes with matching images. So I wanted to know whether they are connected, that they share attitudes, that this happens. Or that they can keep the settings synchronized with each other.
The Windows 10 background images synchronize with the Microsoft account.
Yes, your Windows devices are linked to your Microsoft account. The settings are apparently synchronized via this.
Yes, because if a laptop appears then a folder with backup something is also in the backgrounds under the Alps and if I want to access it then this folder is not on the laptop
Yes, this is Microsoft's synchronization algorithm and nothing can be changed.
Unless it bothers you, you can turn off the synchronization in the settings.