Extend Windows Vista and Windows 7 Trial Period from 30 Days to 120 Days

We all know that if we install Windows Vista or Windows 7 in our computer system and if we don't enter product key and don't activate Windows, we can use them for 30-day trial period. After 30 days, Windows will stop working and we'll have to activate it.

But did you know there is a trick available which can extend this 30-day trial period to 120 days? Yes, you heard it right. Today in this tutorial, we are going to share a simple command which can be used to extend Windows Vista and Windows 7's evaluation period to 120 days i.e. 4 months.

If you want to extend Windows Vista or Windows 7 trial period, just follow these simple steps:

1. Click on "Start button -> All Programs -> Accessories". Right-click on "Command Prompt" and select "Run As Administrator". If you are prompted to enter password, enter the password and continue. You can also open Command Prompt in Administrator mode by typing "cmd" in Start Menu Search box and press "Ctrl+Shift+Enter".

2. Now provide following command:

slmgr -rearm


3. You'll be prompted to restart Windows, restart it and the trial period will reset to 30 days again.

So if you want to enjoy exact 120 days, run above mentioned command on the last day when your Windows trial period is going to expire. The command works only 3 times, that's why its limited to only 120 days. You can check the Trial period by going to System Properties.

Also check:

How to Use Windows Vista and 7 for Approx. One Year Without Activation?

Share this article: Facebook | Twitter | Google+ | Reddit | Tell a friend

Posted in: Windows 7, Windows Vista

Other similar articles that may interest you


  • How do i get into the start menu i have no start menu there is only a window which gives me the option of registering my copy

    I tried using the start button but the start menu dosent open?

    any suggestions?

  • VG

    ^^ Then you can't. Your Windows has already expired, thats why you are not getting Desktop and Explorer running. You are only getting activation window.

    Try to start your system in "Safe Mode with Command Prompt" by pressing "F8" key during startup and then provide the command.

  • pfffff.....

    I never heard about the 30 days testing windows.
    .... I was working with 3.11 and ::lol::.....

    anyway :D

  • Question: does this work even if you've exceeded the 30 day trial? I'm guessing the answer is yes?

    Situation: I installed Windows 7 on January 23. I used the "slmgr -rearm" command on February 23 to extend the trial 30 more days. However, I forgot to use the command again on March 23, and then didn't use the PC for a few days. When I booted on March 26 my desktop background color was black, and there was a message in the lower right hand corner saying that this version of Windows 7 wasn't genuine. I executed the -rearm command again and rebooted, and my desktop went back to what it looked like before, and the message was gone.

    Just wondering what your thoughts are on this situation.

Leave a Comment