Genuine Windows Product Keys for Every Version Still in Use
This is the parent category for every Windows license we sell: Windows 11, Windows 10, Windows 8.1, Windows 7 and, for the machines that still need it, Windows XP. Every key is a genuine Microsoft product key that activates on Microsoft's own servers. You pay once, the key arrives by email within minutes, and the license never expires. If it does not activate, we replace it or refund you under a 180-day guarantee.
We built this page for the buyer who knows they need a Windows key but is not sure which one. Below is how we would answer that question if you called us.
Which Windows Should You Buy in 2026?
Your situation
Buy this
Why
New or recent PC (2018 or later) with TPM 2.0
Windows 11 Pro or Home key
Current version, full support, feature updates every year.
Older PC that fails the Windows 11 hardware check
Windows 10 key
Runs on almost anything, still activates, eligible for Extended Security Updates.
PC that qualifies for Windows 11 but you want the cheapest license
Windows 10 key
Microsoft still accepts Windows 10 keys for Windows 11 activation on the same machine.
Kiosk, industrial PC, machine that must not change
Windows 11 IoT Enterprise LTSC or Windows 10 Enterprise LTSC
No feature updates, long servicing window, minimal built-in apps.
Legacy business software or hardware certified only for older Windows
Windows 7 Professional or Windows 8.1 Pro
Keeps the machine licensed for the software it exists to run.
Home, Pro, Enterprise: The Editions in Plain Language
Home is the complete consumer Windows. Everything a family PC or gaming machine needs, including the Store, Xbox features, Windows Hello and Defender. Pro is Home plus the tools work demands: BitLocker encryption, Remote Desktop host, Hyper-V, Group Policy, domain and Entra ID join, and longer control over updates. Pro N is Pro without the built-in media apps. Pro for Workstations adds ReFS and support for extreme hardware. Education is essentially Enterprise for schools. Enterprise adds advanced security and management for managed fleets, and Enterprise LTSC freezes the feature set for a decade of stability.
Across all of these, our recommendation rarely changes: if the computer is used for work in any form, buy the Pro key. The extra cost here is a few dollars and BitLocker alone justifies it.
Retail vs OEM Windows Keys
You will see both types in these categories. A retail key is transferable: remove it from one PC, activate it on another. An OEM key is bound to the first motherboard it activates on and costs less because of it. Both are genuine and both activate identically. Choose OEM for a PC you intend to keep; choose retail if you rebuild or replace machines regularly. After activation, Windows stores a digital license tied to the hardware, so reinstalls activate automatically without retyping the key.
What About Cheap Windows Keys Elsewhere?
The Windows key market has a well-earned reputation problem. Keys sold for two or three dollars are almost always harvested from volume-license agreements, MSDN subscriptions or educational programs. They activate for a while, then Microsoft blocks the key and your PC drops back to unactivated. We source keys through legitimate channels, sell one license per PC, and stand behind every one of them for 180 days. That is why our prices are low but not absurd, and why our reviews look the way they do.
How Buying a Windows Key Here Works
Open the version you need above and pick an edition. Each product page states whether the key is retail or OEM and which architectures it covers.
Pay securely. Your key, an official Microsoft download link and an activation guide are emailed automatically within minutes.
Enter the key in Settings under Activation, or during a clean install from Microsoft's media. Activation completes online in seconds.
Keep the email. If you ever reinstall, the digital license reactivates by itself, but the key is your proof of purchase.
Need help choosing? Send us the make and model of the PC, or a screenshot of System Information, and we will tell you which key to buy. No upselling.
Buyer questions
Are your Windows product keys genuine?
Yes. Every key activates through Microsoft's activation servers and receives updates like any other licensed copy of Windows. They are digital licenses sold without retail packaging, which is why they cost less.
Which Windows version is right for my PC?
Windows 11 if the PC has TPM 2.0 and a supported processor (most machines from 2018 onward). Windows 10 if it does not. Windows 7 or 8.1 only when specific software or hardware requires them.
Do I need Home or Pro?
Home for personal use and gaming. Pro if you want BitLocker, Remote Desktop, Hyper-V, or you connect to a company network.
Can a Windows 10 key activate Windows 11?
Yes. Microsoft continues to accept genuine Windows 10 Home and Pro keys for the matching Windows 11 edition.
How many PCs can I activate with one key?
One. Buy one key per computer. Multi-PC listings ship with a separate key for each machine.
What happens if the key does not work?
Contact support with your order number. We fix the activation or replace the key; if we cannot, you get a full refund within 180 days.
How fast is delivery?
Keys are emailed automatically within minutes of payment, 24 hours a day.
How fast is delivery?
Your product key and download link are sent to your email address within minutes of payment, around the clock. If nothing arrives within 15 minutes, check your spam folder and then contact support.
Is it a genuine Microsoft key?
Yes. Every Windows Operating Systems key is a genuine Microsoft product key that activates through Microsoft’s own activation servers — genuine software, lifetime licence, updates for the life of the release.
What if the key does not work?
Contact our 24/7 support with your order number. We resolve the activation or replace the key; if we cannot, you receive a full refund under the 180-day money-back guarantee.
Customer reviews
What customers say
4.9 / 5 from 93 Windows Operating Systems customer reviews
“Had some trouble with bootable USB at first, but after fixing it, installation went fine.”
“Windows 10 product key and software arrived via email as advertised. If you don't get it right away be patient, it arrives. Mine was delivered next day. Worked just fine”
“This bundle is exactly what I needed for work. Excel and Outlook run smoothly on Windows 11 Pro.”
“Good value for money. The upgrade unlocked BitLocker and Remote Desktop just like expected.”
“Super quick and hassle-free. The key activated on my PC immediately”
“Worked as expected. Instructions from the seller were clear and helpful.”
“OfficeGSM support was responsive and helpful. Key is fully working.”
“Instant delivery and activation. Windows 11 Home is fantastic on my system”
“Great price for a genuine key. Installation and activation went smoothly.”
“Very satisfied. Clean OS, fast performance, and no unnecessary apps. Would buy again.”
“Easy and fast. The license key was valid and activated my PC immediately. Highly recommend.”
“Lifetime Office license confirmed and Windows 11 Pro activated digitally. Excellent deal.”
