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A common type of modified ISOs of the Windows desktop operating system that are found on the internet for free. They are illegally activated and come with infected files, unknown Services, malicious scripts, etc., without the user's knowledge. They have random problems and errors, including the infamous BSoD screen. Users often try to find non-existent solution to fix them because of these mysterious errors caused by altered system files and Registries. Surprisingly, these versions became popular since the XP era.
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