If for some reason you can’t change the product key of your Server 2008 under the My Computer Windows Activation option:
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Do the following.
- Open the command prompt and change working directory to System32 directory
- Type in slmgr.vbs -ckms (this clears and KMS entry you may have)
- Type slmgr.vbs -upk (this removes any product key installed)
- Type slmgr.vbs -ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx (where the x’s is the new product key you want to use )
- Type slmgr.vbs -ato (this activates the server)
after doing that, Windows Server 2008 should show up as activated.

activating windows 2008 has never been easier
Worked great thank you
I tried this but it installs product key but when i type slmgr.vbs -ato it shows error activating windows.
Thank you so much, it really easy and worked successfully.
Worked great for me too. Thank You!
…. why not just click the change product key button under system?
for example right click computer, click properties. change product key?
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Thanks for this post, helped out great.
@Techy – that button doesn't always work.
hi this shashikant i want to product key on server2008 server
i m interested in windows server 2008
hi this rushi i want to product key on server2008 server
Works great, thanx, but only when logged as the administrator who originate installed the OS. Works not when logged on as a arbitrary domain admin
hello everybody,
thanks for the help, but it didn't worked for me.
it shows error 0*c004f050.
sir
please give me server 2008 product key
please give me server 2008 product key
what server 2008 version does it apply to, enterprise, standard or what, failed to work on enterprise
I believe Microsoft have patched this ‘feature’. Good while it lasted though.
Ha ! Sir i want product key on server 2008 plz required of 2008 server
Great help!
pls how to product key pls
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How can I do this for Windows 7 Ultimate?.
Thx.
Thanks we got our windows 2008 server aktivated :=)