Windows 10 Professional CD-KEY (32/64 Bit) works only for Windows, not for Mac!
Windows 10 Home, Windows 7 Home Basic/Premium and Windows 8.1 CoreCountrySpecific/CoreSingleLanguage/Chinese (incl. WMC) CANNOT be directly upgraded to Windows 10 Professional by changing product key in Windows system. If You have these editions on you computer, you need to make a clean installation after purchasing Windows 10 Professional.
More information about installation you can find in delivery email.
Please check the spam or junk mail folder too.
Windows 10 is designed to be compatible with the hardware, software, and peripherals you already own. And always-enabled updates help you stay current on features and security for the supported lifetime of your device.
Windows 10 gives you absolutely the best experience for doing what you do. Stay focused with easy ways to snap apps in place and optimize your screen space for getting things done. See your open tasks in a single view and create virtual desktops to gain space or group things by project, like Office apps for work and games for play.
Gaming just got even better with Windows 10. Not only do your existing games work great, but now you can play and connect with gamers across Xbox One and Windows 10 devices. From the best casual games to a new generation of PC gaming, Windows 10 is built for games you love.
Some users may afraid of uncustomed operation on Windows 10, but the fact is that it is a really easy and convenient experience with it. You will find it is quick to be familiar with and you can not live without it after a long-time using. No more to say, start a comfortable system from now!
How to activate Windows 10 Pro Pruduct Key:
The first way:
1. Download and install Windows 10 Professional.
2. Open system "Control Panel" - "All Control Panel Items" - "System", and click "Activate Windows" & "Change Product Key".
3. Click "Activation" and enter your Windows 10 Pro key.
The second way:
1. Download and install Windows 10 Pro Professional.
2. Right-click "Start Menu", choose "System".
3. Click "About", then Click "Change Product Key" or "Upgrade Your Edition of Windows".
4. Click "Change product key" and Enter your Windows 10 Activation Key.
Good deal, no problem. Very happy. Yes
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Great price, shipped fast! Thanks!
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Excellent service. Prompt delivery. Great value product key.
fácil de pedir, fácil de pagar, envío rápido
Good deal. Easy and very good price. Recommended
Fast, efficient service. Easy to follow and a good price.
An easy and reliable method to purchase software key.
Потрясающий. Сэкономил мне кучу денег и работает хорошо.
every thing go fast , it was very easy , i was amazed
very easy to use and they are quick to respond to any questions or problems.
I've used this website for a couple of times now and have never had any problems delivery is fast!
great site, worked without issues
Foi fácil encomendar o meu artigo e o preço foi muito bom. Escolha da data de entrega e meu item foi entregue no prazo. Muito bom serviço.
Product key works great!
Precio competitivo, entrega rápida.
Ótima chave de produto e preços, pedido fácil.
Very good service as usual, Very good price, And as usual very good delivery.
I was very impressed with the knowledge and patience of my customer service rep
I recently purchased a few keys of software from keysoff.com and got what I was looking for. I'd give them 6 stars if I could for the big variety of products they have and how easy it is to find what you're looking for. Thanks guys keep it up!
Tengo justo lo que pedí a un precio justo.
Great online buying experience! KEY shipped without delay, and arrived ontime.
Cannot recommend this website highly enough. A great user friendly website with excellent customer support. Always available and happy to help.
Process was easy and quick and gave me exactly what I wanted.
Keysoff.com est le meilleur site Web pour moi, j'ai utilisé beaucoup de fois
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Fácil de instalar, o que é ótimo. Comunicação de primeira classe e boa relação custo-benefício
Great experience easy and friendly interface
Amazing and easy to use software cd key, with an 24/7 customer support. Quick contact and prompt answer - great experience.
Very fast deliveri, good price, fast buying, all perfect.
Everything worked as advertised. Quick no hastle...
Very polite and prompt delivery from s friendly driver. Delivery took place within the 2 hour slot which had been emailed to me earlier.
Pues no tengo nada malo que decir, grandes precios y entrega inmediata. muy contento con el servicio.
Siempre perfecto, tuve un problema y en un par de días solucionado.
Cheap, easy to order from, speedy delivery...
Everything passed smoothly
well, nothing much to say it was a straightforward procedure
My order was filled fast! I definitely recommend!
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Easy, fast, cheap. Perfect.
L'achat c'est très bien passé et très sécurisé
Simple and Fast
Einfach, schnell und unkompliziert !
I was sceptical at first with such low prices but the transaction was fine and the key worked perfectly.
Very easy to use and cheap.
Fast and reliable.
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Very good service
Like always : fast and easy delivery and good price!
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always easy and quick
I bought windows 10 pro license with big discount. All working as expected..very good service
Assez bon prix et bon service après vente. Mais il a souvent des rabais seulement en Europe, donc c'est désolant!!!
Like always without any kind of problems...easy and saving money! Thanks
Good experience. Quick processing after my credit card company first rejected purchase (flagged as suspicious) and I was worried I would be double charged, but I wasn't. Then, near instant key, worked without a problem.
Quick and no problems
I got the key immediately after the payment, and everything works. Awesome service for the very low price.
Fast and easy purchase, didn’t even take 10 seconds to receive my key. 10/10 would use again
Rapide, efficace et sans surprise
super impeccable rien de plus
NO issues and the code was delivered immediately
Good site cheapsoftwares and you get them the second after you buy them
Excellent service, prices and speed, as always!
got the key in 10 seconds after transaction
Very good experience, highly recommended.
Great website, completely reliable, easy payment.
Good, windows 10 works perfectly thank you.
good speed and high quality, thanks!
In few seconds the code is in your mail.
Very good prices
Ordered a Win10 Pro license and everything went fine: from the purchase, to the swiftness of the response with product code and the step by step installation instructions.
I liked the discounts.
The purchased product is fully licensed.
I recommend this store.
Quick response with keys and instructions. Cannot fault. First tiem user who will purchase again if something gabs my attention
Excellent service! Cheap and fast delivery!
Very nice price, recommend for everyone.
I have got a Windows 10pro license, everithing worked flawless i will come back and buy more for sure. Riky from italy
Great service. Windows 10 licence works perfectly.
I replaced my motherboard and my old activation key would no longer work. I bought a new key from Keysoff and received it within an hour. Went to the Windows Activation settings, clicked "Change product key", entered the key from Keysoff, and Windows is activated!!! I didn't need to re-install Windows.