Microsoft
Outlook.com, OneDrive, Xbox, Skype
There is no setting to switch on
So what you write down is what your family will have.
If nobody planned
Microsoft has no legacy setting. A personal Microsoft account that nobody signs in to for two years can be closed, and its mail and files go with it, so your family has a window, not forever.
Write this down for your family
- The sign-in email and password
- Backup codes or the authenticator app's phone
- What is in OneDrive that someone should save