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What happens if Windows 8.1 is not activated?
I would like to inform you that Windows 8 will last without activating, for 30 days. During the 30 day period, Windows will show the Activate Windows watermark about every 3 hours or so. … After 30 days, Windows will ask you to activate and every hour the computer will shut down (Turn off).
How do I activate expired Windows 8?
Type slmgr -rearm command and press Enter key. Click Ok from the pop up Windows Script Host and reboot your machine. After that, you Windows will be activated automatically and get rid of license will expire soon problem on your Windows 8.1 PC.