Microsoft KMS Host

Recently I have to setup KMS server to activate Windows 2008/R2 and Windows 7 on our network.

Here are some necessary steps/tricks:

• If a Windows was activated with KMS key, it will automatically become a KMS host
• Depending on the KMS host OS and the KMS group key entered, different KMS clients can be activated through this KMS host
• KMS group key C is the highest you can enter which basically can activate all Windows 2008/R2, Vista, and Windows 7 with any edition
• To enter KMS key, run cmd prompt in escalated mode and do:

slmgr.vbs /ipk

• To activate KMS host, do:

slmgr.vbs /ato

• Once KMS host has been activated, check DNS entry for _VLMCS SRV record that points to this KMS host
• To check how many KMS client has been trying to activate themselves through KMS host, do:

slmgr.vbs /dli

• Now all the KMS clients (Volume License Key) should by default try to activate through KMS host
  
• If you accidentally entered a KMS key to a KMS client, you can de-activate the KMS client by entering the "client type" key. Client type key depends on the Windows version, check on the following link

http://technet.microsoft.com/en-us/library/cc303280.aspx

• Once you have the client type key, enter it and activate it:

slmgr.vbs /ipk
slmgr.vbs /ato