How to Buy Multiple Windows Licenses

When you purchase Microsoft Windows from a big box retailer, such as an office supply store, that version usually carries a single license for use on one. If you need to use Windows on multiple computers, you could purchase multiple copies of the single-license version, but that is expensive. Instead, you can purchase a volume license which allows you to install Windows on five or more computers. Volume licenses are only available through Microsoft or authorized resellers.

New Customers

Navigate to the Microsoft Volume Licensing website at

Click “How to Buy,” and select “Buy or Renew.”

Call Microsoft at (800) 426-9400 or click “Find and authorized reseller,” and enter your city, state and zip to find a reseller near you.

  • The Microsoft customer service line or the authorized retailer can tell you how to buy multiple windows licenses.

Existing Customers

Navigate to the Microsoft Volume Licensing website at

Click “Existing Customers” and select “Product Activation” if you have an invitation to the Volume Licensing Service Center (VLSC) or if you already have a volume license on another Microsoft product.

Scroll down to “1.

Find Products” at the bottom of the page. Enter your version of Windows in the “Search for Products” field and click the arrow.

  • The following page will show you the Volume License Keys that are available for your version of Windows.

Scroll to the top right corner of the page and click on “Volume Licensing Service Center” under “Quick Links.”

Click “Sign” in and enter your Windows Live ID and password.

  • If you do not have a Windows Live ID, click “Sign up now,” and follow the on-screen prompts to create an ID.

Enter your business email address.

  • If you have received an invitation to join VLSC, use the address on the invitation.
  • If you have not, use the email address for business name on your existing volume license agreement.
  • Microsoft will send you a verification email. Go to your email inbox, retrieve the message and follow the instructions for verifying your address.

Go to the page that lists your open licenses.

Select the option to add a volume license.

Follow the screen prompts to purchase a volume license for your version of Windows.


  • Older versions of Windows, such as Windows 98 or Windows 2000 Server are no longer supported by Microsoft and might not have volume licenses available. If your version of windows is older than Windows Vista, or if your server version is older 2008, contact Microsoft at (800) 426-9400 for assistance.

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