KMS Update to Support Windows 8.1 / Windows Server 2012 R2

Microsoft had released an update for Windows 7, Windows Server 2008 R2, Windows 8, Windows Server 2012 KMS Hosts to support WIndows 8.1 and Windows Server 2012 R2

http://support.microsoft.com/kb/2885698/en-us

Install the update and reboot, then add the new Windows Server 2012 R2 or Windows 8.1 KMS Host key

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KMS Update to Support Windows 8 / Windows Server 2012

Microsoft had released an update for Windows 7 and Windows Server 2008 R2 KMS Hosts to support WIndows 8 and Windows Server 2012

http://support.microsoft.com/kb/2691586/en-us

Installation instructions

If you have a KMS host that is running Windows Server 2008 R2 SP1 or Windows 7 SP1, follow these steps to perform an upgrade:

  1. Install this update (KB2691586).
  2. Restart the computer when you are prompted.
  3. To install a new KMS host key for Windows 8 activation or for Windows Server 2012 activation, run the following command:
    cscript %windir%\system32\slmgr.vbs /ipk <KMS host key>

Note In this command, replace <KMS host key> with the new KMS host key for Windows 8 activation or for Windows Server 2012 activation.
Important Every KMS host key is associated with a group of Windows editions. Additionally, a KMS host key that is associated with Windows client operating systems cannot be installed on Windows server operating systems, and vice-versa. This is true for all Windows operating systems except for Windows Server 2003. If you install a KMS host key on a Windows operating system that is not associated with that host key, you receive the following error message:
0xc004f015: The Software Licensing Service reported that the license is not installed. SL_E_PRODUCT_SKU_NOT_INSTALLED

For example, you receive this error message if you try to install a KMS host key for Windows 7 on a computer that is running Windows Server 2008 R2.
For more information about KMS host keys and about associated groups of Windows editions, see Table 5 in the “Determine Product Key Needs” section of the Volume Activation Planning Guide
(http://technet.microsoft.com/en-us/library/dd878528.aspx#E3IAC)

Activate the new KMS host key on the host computer, run the following command:
cscript %windir%\system32\slmgr.vbs /ato

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