There is nothing more frustrating than having a translucent "Activate Windows - Go to Settings to activate Windows" watermark burned into the bottom-right corner of your screen. It appears over games, movies, presentations, and screenshots. Here is why the watermark appears, why registry hacks only work temporarily, and how to remove it permanently.
You have probably seen popular YouTube tutorials showing registry tweaks (like setting PaintDesktopVersion to 0 or restarting the sppsvc software protection service via a .bat script). While this removes the text for a few hours, Windows checks licensing tokens on every reboot and during background maintenance tasks. As soon as the service restarts, the watermark reappears!
The watermark is Windows' way of telling you that your machine lacks digital entitlement. Once you activate Windows with an authentic license key:
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While it doesn't throttle CPU directly, running an unactivated copy disables certain background DirectStorage optimizations and keeps the Software Licensing Service polling repeatedly, wasting background CPU cycles.
No! The watermark vanishes within 2 seconds of entering your product key in Settings. No reboot or reinstallation is necessary.