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There are three possible scenarios for volume activation of Windows 10 or Windows Server 2012 R2 by using a Key Management Service (KMS) host:
Check out Windows 10 Volume Activation Tips. Key Management Service in Windows 10Installing a KMS host key on a computer running Windows 10 allows you to activate other computers running Windows 10 against this KMS host and earlier versions of the client operating system, such as Windows 8.1 or Windows 7. Clients locate the KMS server by using resource records in DNS, so some configuration of DNS may be required. This scenario can be beneficial if your organization uses volume activation for clients and MAK-based activation for a smaller number of servers. To enable KMS functionality, a KMS key is installed on a KMS host; then, the host is activated over the Internet or by phone using Microsoft activation services. Configure KMS in Windows 10To activate, use the
For more information, see the information for Windows 7 in Deploy KMS Activation. Key Management Service in Windows Server 2012 R2Installing a KMS host key on a computer running Windows Server allows you to activate computers running Windows Server 2012 R2, Windows Server 2008 R2, Windows Server 2008, Windows 10, Windows 8.1, Windows 7, and Windows Vista. Note You cannot install a client KMS key into the KMS in Windows Server. This scenario is commonly used in larger organizations that don't find the overhead of using a server a burden. Configure KMS in Windows Server 2012 R2
Now that the KMS host is configured, it will begin to listen for activation requests. However, it will not activate clients successfully until the activation threshold is met. Verifying the configuration of Key Management ServiceKMS volume activation can be verified from the KMS host server or from the client computer. KMS volume activation requires a minimum threshold of 25 computers before activation requests will be processed. The verification process described here will increment the activation count each time a client computer contacts the KMS host, but unless the activation threshold is reached, the verification will take the form of an error message rather than a confirmation message. Note If you configured Active Directory-based activation before configuring KMS activation, you must use a client computer that will not first try to activate itself by using Active Directory-based activation. You could use a workgroup computer that is not joined to a domain or a computer running Windows 7 or Windows Server 2008 R2. To verify that KMS volume activation works, complete the following steps:
For more information about the use and syntax of slmgr.vbs, see Slmgr.vbs Options. Key Management Service in earlier versions of WindowsIf you've already established a KMS infrastructure in your organization for an earlier version of Windows, you may want to continue using that infrastructure to activate computers running Windows 10 or Windows Server 2012 R2. Your existing KMS host must be running Windows 7 or later. To upgrade your KMS host, complete the following steps:
For detailed instructions, see Update that enables Windows 8.1 and Windows 8 KMS hosts to activate a later version of Windows and Update that enables Windows 7 and Windows Server 2008 R2 KMS hosts to activate Windows 10. Related articles
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