And have you looked through the diagnostic data Windows sends? That cannot be turned off without hacks? They get live notifications when you add or remove hardware, software, when an application has crashed (even when error reporting is off), …. The data contains unique identifiers for your system and user. I don’t even want to know what’s sent when you select full diagnostics.
Windows is a privacy and performance nightmare. It’s good for two things only: corporate environments (manageability) and games.
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Well, sorry about that. Just had to get this off my chest.