If you want to change windows server 2008 and windows server 2008 R2 serial number or product key do the following :

  • Run Command Prompt as Administrator
  • Change working directory to %system32% ( cd %windir%\system32)
  • issue command slmgr.vbs -ckms (this command clears KMS)
  • issue command slmgr.vbs -upk (uninstall product key)
  • issue command slmgr.vbs -ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX (install new product key where X is your 25 digit product key)
  • issue command slmgr.vbs -ato (activate your copy of windows)

That’s it.

8 Replies to “how to change windows server 2008 product key serial number”

  1. I recently installed and setup Server 2008 which I bought from the local bazzarr while in Iraq. Come to findout, after setting everything up and doing hours worth of configuration… He is a thief and sold me a pirated version of server. Looked real enough.. holographic CD and the whole 9 yards. Now that i am back home, and in college, I can get a free version of Server 2008 with an academic key from Microsoft under their acdemic software. Will this work for changing the product key to the academic key?

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