Monday, 11 February 2013

Extending the Evaluation Period of Windows OS


Most of us working in IT Infrastructure management and service management industry would have worked upon evaluation versions of operating systems for test purposes most of them come  with expiry period of 60 days and after that they might behave differently ; like it may forcely boot or screen might go black etc.

In such situations we can go for extending the OS evaluation period for around 240 days wiht rearm command .But don’t use the rearm command until and unless your evaluation period is finished else it might waste the remaining evaluation period. Hence it is advisable to check the remaining evaluation period before we go for rearm command.

In order to check how much of evaluation period is remaining please perform following steps on your system (Here I was using Windows Server 2008 R2)

1.   1.   Go to START type CMD right click on CMD and select Run as administrator for elevated privileges 


h  2.   A prompt would appear shown as below click on yes


   3.  Now type slmgr.vbs  –dli (software licence manager command; -dli Display license information)in command prompt which would return message from windows script host something like this which tells how many days are left with evaluation period


   4.  If it shows very less time left with evaluation period then you can reset the evaluation period to additional 60 days as a grace period with rearm (rearm: Reset activation timer and initialization) command as follows


      You are done and good to go additionally if you want to check the grace period expiration details for that system you can type slmgr.vbs –xpr which will  provide you the expiry details of the grace period.




 

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