Evaluation Period expired for Windows Server 2012 R2, How to extend it ?

After Window Server evaluation period has expired , you will found out unexpected behavior for your machine like unexpected Shutdown / Restart every one hour approximately !

Windows License is expired Build 9600

Windows License is expired

In this case, you only have two options:

  • Purchasing a new Windows Key, activate windows through Go to PC  Settings“.
  • Extend Window Server evaluation period has expired .

Note :  The windows will notify you with the following message.

Your Windows license will expire soon.

Your Windows license will expire soon

Before 12 days of Windows Server 2012 license Expiration to activate Windows.

Windows License valid for days

In this hint, I will elaborate How to Extend Windows Server Evaluation Period by following the bit mentioned steps below:


  • Open Command Prompt as Administrator.

run cmd as administrator

  • Reset the licensing status of machine by typing the following command
    • slmgr.vbs /rearm“.

rearm Windows Evaluation Period

  • Restart the server.
  • The Windows Evaluation Period should now be extended to additional 180 days.
  • After Server restart , wait a moment and you will find the license has been extended successfully.

Extend Windows Server 2012 Evaluation Period

Regarding Windows Server 2008

  • Follow the above-mentioned steps with the following changes.
    • The command will be slmgr.vbs -rearm instead of slmgr.vbs /rearm.
    • The command will extend windows evaluation period to additional 60 days,  that can be used again for three times.

Enjoy 🙂

51 thoughts on “Evaluation Period expired for Windows Server 2012 R2, How to extend it ?

  1. This worked perfectly! If you use remote desktop to do this, press Alt-F4 to reboot the server. Now is there a way to purchase a key for the Evaluation version or must you install the full OS?


  2. Hello, I just wanted ti share with you this website, very interesting : “licence-activation” where you can get an original activation key and a genuine licence on a very interesting price.
    I have tried a key from the website and it is perfectly working. They answer quite fastly to emails, and can even assist you online through Teamviewer in case of a problem. I highly recommend.


  3. Hello,

    I have a machine behind firewall. WHich is the url, port that needs to be enabled so that the Evaluation can be registered to microsoft?



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