Hi Aymanayoub,
By default, Shared experiences feature is turned on in Windows 10, and your device is set to share or receive from your own devices only, but you can disable it or change the settings. I would suggest that you remove the account by going to Settings > Accounts > Email & App accounts.
You can also disable or change the Shared experiences settings by going to Settings > Systems > Shared experiences.
Should you need further assistance, don't hesitate to get back to us.
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