Home 2018-04-23T09:09:11+00:00

Featured Products

How It Works

01. Secure Purchase

Secure purchase with SSL encryption

02. Instant Delivery

Your key delivered instantly

03. Activate + Support

We provide full support on all products

Buy Windows Product Key

Welcome to the premiere provider of genuine Retail and OEM Windows product keys. We have helped thousands of customers save time and money on their Windows product key purchases for Microsoft Windows 10 Home, Windows 10 Pro, Windows 8.1, and Windows Office 2016 Pro Plus.

Compare our prices for product keys to see how much you can save by shopping with KeyStoreOnline.  You have found the real lowest cost provider of genuine Windows and Windows Office product keys. The low cost of our keys is made possible by our commitment to authentic Microsoft Resellers.

Shopping with KeyStoreOnline is fast and convenient. Our keys are delivered Instantly along with download links and instructions. We are available for support if you have any issues with your product.

All of our product keys are sourced directly from Third Party Microsoft Resellers. These are NOT trial keys, but legitimate legal FULL PRODUCT keys that work with official Microsoft product updates. Never get stuck with an outdated version of Microsoft Windows or Office ever again.

All of our products are stand-alone keys, and we offer a full exchange and refund policy in the rare event that a key is broken. On the rare occasion that there is a problem with one of our product keys, you get a new working key at no cost or, if you wish, a full refund on your investment. Chargebacks, however, will be reported.

We are also able to provide large numbers of product keys at a volume discount for large business, institutional, and enterprise buyers. Please contact us for more details about our volume discount pricing. KeyStoreOnline will help you lower your overhead costs, and save money for the things that really matter to your business and its most valuable clients.

Support is also offered on all our product keys during installation. We supply download links and a quick installation guide with every key.

Microsoft is a trademark of the Microsoft group of companies.

Easy to install with the instructions provided and fast delivery, thanks again.


Thank you. Installation to a new PC went smoothly. No problem was encountered during the process.


Outstanding Experience!!! Win 10 Home to Win 10 pro less than 10 minutes from purchasing Win 10 Pro key from site.
Upgraded perfect, Activated perfect!!!!!


Pretty skeptical at first, but actually worked and key was given instantly. Best price honestly, anything lower tends to come from sketchier places.


Windows 10 Pro Key worked! Lisa is an extremely patient and kind person, and will most likely help with anything you need. Best price around for sure anything less is a little sketchy.

What are OEM keys? 2018-03-22T11:50:23+00:00

Definition of OEM:
The term, OEM (original equipment manufacturer) refers to companies that make products for others to repackage and sell. Resellers buy OEM products in bulk, minus the costly retail packaging that comes with individually sold units. The product itself is essentially the same as its more expensive, retail-packaged sibling. OEM products are used in many industries, but are perhaps most prevalent in electronics.

Do I need to do a fresh install? 2018-03-22T11:50:06+00:00

Yes. We provide download links and information on how to do a fresh install. These are NOT upgrades keys.

Do you offer refunds? 2018-04-08T07:51:15+00:00

Yes we do offer refunds. If on a rare occasion the key fails to work and you don’t want a replacement key.

You will need to provide a valid screen shot of the error code. Once we issue the refund the key/s WILL be reported for deactivation.

We also take Chargebacks very seriously. Once a chargeback has been submitted we will report the key as stolen to Microsoft. We will also report your IP address to the credit card company. We will also take legal action to recover the costs we loose.

Are the keys stand alone keys? 2018-03-22T11:49:27+00:00

Yes all keys are stand alone keys.

What payment methods do you accept? 2018-03-22T11:49:06+00:00

We accept Paypal as payment. You don’t need a paypal account to make payment, you can use a debit or credit card.

Installation 2018-03-22T11:48:37+00:00

All Windows Office Keys require Phone Verification.  We supply details on how to do this along with your key.

Windows 10 Pro & Windows 8.1 Pro Keys require a fresh install. We supply details on how to do this along with your key.

How do you deliver the key? 2018-03-22T11:48:19+00:00

The key and instruction’s will be delivered to your Paypal email address (24 hours or less)

Will the key allow product updates? 2018-03-22T11:47:50+00:00

Yes the key will

Is this a trial key? 2018-03-22T11:47:06+00:00

No this is NOT a trial key. The key will last forever.

Are the Windows keys genuine? 2018-03-22T11:46:43+00:00

Yes the keys are sourced from Microsoft resellers

How long before I receive my windows key? 2018-03-22T11:46:14+00:00

Your key is delivered instantly to your account email. You will also have access to downlinks and a installation guide. Please click return to merchant after making payment.

I have not received my key? 2018-03-22T11:45:03+00:00

Please check your spam folder. You are emailed the key and instructions Instantly after payment. You should also be redirected to your account after making payment.

If you still have not received a email please contact us at support@keystoreonline.com

From Our Blog

How to Go Back From Windows 10 to Windows 8

September 22nd, 2016|0 Comments

Upgraded to the new Windows and don’t think it’s all that? Feel like going

  • fresh install windows 10

What’s The Difference between Windows 10 and Windows 8

September 21st, 2016|0 Comments

Let’s face it! Microsoft has had to fight for its previously taken-for-granted, number one

  • buy windows office key


September 19th, 2016|0 Comments

This article outlines the steps to installing or reinstalling your Microsoft Windows Office 2016.