
To look up your product and see if it requires a VLK, see the Product Activation and Key Information page on the Microsoft Volume Licensing site.

License-only products, such as client access licenses, management licenses, and external connector licenses, do not require keys or codes for setup (the only exceptions to this rule are the client access licenses for Small Business Server 2003). To activate most of these products, including Windows 7 and Windows Server 2012, a 25-character volume license key (VLK) is required.

Products received through this program require activation if they are to be used, to verify that the software has been received through legitimate means and is not installed on more computers than permitted. All Microsoft products obtained by nonprofit organisations through Charity Digital Exchange are received through a Microsoft Volume Licensing program.
