: Control whether apps can access your account name, picture, and other profile details.
: During setup, choosing "Customize" instead of "Use express settings" allows you to manually toggle features like location services, browser protection, and data sharing for the Windows Customer Experience Improvement Program Use Local Accounts (Optional) : Control whether apps can access your account
: You can choose to sign in with a Microsoft account, which enables the synchronization of settings, browser history, and passwords across devices. Location Services which enables the synchronization of settings
Once the installation is complete, you can further refine your privacy stance. For maximum privacy, many experts recommend using a instead of a Microsoft account to prevent cloud-based data syncing. Windows 8.1 and Windows Server 2012 R2 KMS Keys : Control whether apps can access your account