After Window Server evaluation period has expired, you will face annoying behavior where it will suddenly shutdown every one hour !

In this case,you only have two options:

  • Activate windows by purchasing a new Key.
  • Extend evaluation period.(Simplest & Quickly method).


Therefore, to extend the evaluation period follow the bit mentioned steps below:

  • Open Command prompt as Administrator.

Run CMD As Administrator

  • Type the following command “slmgr.vbs /rearm” which reset the licensing status of machine and press enter.

reset the licence

  • Restart your server then you will found the evaluation period expired to 180 day.


Note:This method will extend your windows only one for 180 day after that you should buy the key .

Regarding Windows Server 2008 you should follow the previous steps with the following changes

  • The command will be slmgr.vbs -rearm instead of slmgr.vbs /rearm
  • The command will extend to 60 day and you can use it for 3 times.

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