Extend Windows 7 Trial Period

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If you got your hands on a copy of Windows 7 (pre-beta or beta) you should have also received a Windows 7 product key with it to test the new operating system extensively. If you did install it without entering the product key you might have noticed by now that the operating system can only be tested for a period of 30 days before it requires registration.

There is however one simply command that can extend the trial period by another 30 days in case you need the extra time to find the key or to evaluate the Windows 7 operating system. To use it you need to load the command prompt in Windows 7 as an administrator and enter the following command:

sysprep /generalize

You can alternatively try the following two commands which should do the same:

slmgr.vbs –rearm
rundll32 slc.dll,SLReArmWindows

Reboot Windows 7 so that the changes can take effect. If everything worked out you should be able to test the Windows 7 operating system for another 30 days.

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About the Author: Martin Brinkmann is an Online Journalist from Germany who discovered his love for technology in high school. He is currently working as a freelancer for several publications and runs his own Internet website Ghacks

  • Carbon
    Haha, that's awesome.Â
  • ALI BABA
    GOOG WINDOWS
  • lgm
    good idea.
  • ISOHaven
    My Vista Beta key worked just fine.
  • Don
    what was the key Isohaven?
  • cristyrazvan
    WIN7 seems to be the best windows so far! If the beta works so smooth, then the final release will surely step on any other os :D
  • Nagendra
    Do anybody have Windows 7 Professional key

    Please mail me at nagendrasahni@yahoo.co.in

    I have downloaded win7 nad installed it but m unable to get product key for it.

    Thanks
  • beaustman
    Is it working more than once ?
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