But note that a key can only be used on one PC at a time, so if you use that key for a new PC build , any other PC running that key is out of luck. Downsides of Using an Old Key When using an older Windows key to activate Windows 10, you may run into complications if Microsoft isn't sure whether you're eligible to update or not. But that seems to be happening less in recent months and years. Don't Activate Windows: I have colleagues who have used non-activated versions of Windows for years without Microsoft ever shutting it down. Microsoft brands PCs running an unactivated version of Windows 10 with a watermark in the bottom-right corner of the screen. A Microsoft spokesperson told me that activating Windows 10 ensures you have a legitimate copy of Windows 10, and the watermark is an attempt to alert consumers that their version could be false.
Twitter Advertisement Windows is expensive. The free Windows 10 upgrade has expired and both Windows 7 and 8. This means you can no longer buy these Windows versions, nor PCs that come with them pre-installed. Whether it's a flashing screen, network connectivity issues, or battery drain, it's time to resolve these problems. Read More and would prefer to go back to Windows 8.
Updated October 30,1: Why Are They So Cheap? Some of these keys just come from other countries where Windows licenses are cheaper. They may be legitimate, but they were sold for cheaper in other countries.
Related Products. Regular Price: $ Special Price $ Regular Price: $ Special Price $ Windows Pro Professional CD-KEY (32/64 Bit) Regular Price: $ Regular Price: $ Special Price $ Regular Price: $ Windows Server Standard. Regular Price: $ Regular Price. Nov 8, - The deadline to get a free upgrade to Windows 10 has sadly now passed. Not to worry though as you can rely on TechRadar to help you buy. Oct 30, - The websites selling cheap Windows 10 and Windows 7 keys aren't getting numbers, purchases a bunch of Windows keys online, and sells them through When you're ready to buy Windows 10, you can pay to upgrade.