Question: Do You Need a Windows Activation Key?
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What happens if you don’t have a Windows product key?

Even if you don’t have a product key, you’ll still be able to use an unactivated version of Windows 10, although some features may be limited. Inactivated versions of Windows 10 have a watermark in the bottom right saying, “Activate Windows”. You also can’t personalize any colors, themes, backgrounds, etc.

Can I use Windows 10 without activation key?

It’s legal to install Windows 10 before you activate it, but you’ll not be able to personalize it or access some other features. Make sure if you buy a Product Key to get it from a major retailer who backs their sales or Microsoft as any really cheap keys are almost always bogus.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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