Microsoft 365 
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40,000+ keys delivered and 16,000+ orders fulfilled since 2025
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“Phone activation” keys are for your PC — not your phone
They are full Windows and Office licenses for your computer — just a cheaper way to activate them. During activation, Windows or Office shows an Installation ID; paste it into our free Get CID page and your Confirmation ID appears instantly. No phone call, no app. One Confirmation ID is included with every phone activation key.
Find the Right Key
Pick what you need — we'll show every option, cheapest first, and how each one activates.
OEM keys stay with the first PC they activate on; Retail keys can move to a new PC later. Phone-activation keys are the cheapest — we give you the Confirmation ID online.
Professional Plus: Word, Excel, PowerPoint, Outlook, Access and Publisher. Home & Student: Word, Excel and PowerPoint. Office 2024 is the newest and is supported until 2029.
One year of Microsoft Office 365 for one person with 1 TB of OneDrive, delivered as an invitation to join with your own Microsoft account.
Visio for diagrams and flowcharts, Project for planning and scheduling. Both run on Windows.
Windows Server, Remote Desktop (RDS) client access licenses and SQL Server for businesses.
Not sure which key type you need? OEM vs Retail vs phone vs Microsoft account →
Or browse: Windows · Office · Microsoft 365 · Visio · Project · Server · Bundles
Most Popular Keys
See How Activation Works
Setting Up a New PC? Get Everything You Need
Windows + Office together — the complete setup, up to 25% cheaper than buying separately
See Bundle Deals Or build your own bundle & save up to 25%Three Steps to Your Software — That's It
Pick the Right Version
Use the Key Finder above — every option shows what it includes and how it activates
Checkout in 30 Seconds
Pay with card, Apple Pay, Google Pay, Klarna, Affirm, crypto or Binance Pay — no account needed
Activate Right Away
Your license key lands in your inbox in seconds — copy, paste, done. Works on Microsoft's official activation servers
Your Own Personal Support Chat
Every order comes with a dedicated support thread built right into your account. No tickets, no waiting on hold — just a direct conversation with our team. Ask questions about activation, get help with installation, or request a replacement — all in one place.
- Fast, personal replies from our team
- Message us any time — your thread stays with your order
- Activation guarantee — key doesn't work? Free replacement, or a refund if we can't replace it
- Real humans — no bots, no automated scripts
1. Go to office.com/setup
2. Sign in with your Microsoft account
3. Enter your product key
That's it — Office will download automatically!
Frequently Asked Questions
Microsoft sells keys at full retail price. We buy genuine licenses in bulk from the wholesale market and pass the savings on — the same keys, without the retail markup. Every key is covered by our activation guarantee.
Online keys are the easiest: enter the key and Windows or Office activates over the internet in seconds. Phone activation keys are cheaper: when activation asks you to activate by phone, paste the Installation ID into our free Get CID page and you get the Confirmation ID instantly — no call needed.
Yes. Every key is a genuine Microsoft product key that activates on Microsoft's own activation servers. We have delivered over 40,000 keys since 2025.
Usually instant: most keys appear on your order page and in your email within seconds of payment. At busy times, or while a product is being restocked, it can take a few minutes — delivery time depends on demand and stock.
Message us from your order page or email support@keyslocker.com. If the key doesn't activate, we send a free replacement — or a full refund if we can't replace it. Just contact us within the warranty period shown on the product.
Yes, if your key doesn't activate or is rejected, within the warranty period shown on the product page. Keys that have already been activated, and change-of-mind purchases, can't be refunded — see our Refund Policy for details.