Windows Vista without Activation for Free for 120 Days

Official Way to Install and Use Windows Vista without Activation for Free for 120 Days  

By default, Windows Vista can be installed, used and run without any license, product key or the need of activation for 30 days grace period, for purpose of trial or evaluation. Although Microsoftinitially stressed that users should purchase a license with valid product key before the trial period expires, or else Windows Vista will lock into Reduced Functionality Mode. However, a “rearm” method has long since been discovered to be able to extend, or reset the remaining time for activation to another fresh 30 days, for up to 3 times.

Now Microsoft has confirmed that Windows Vista can be used and run for 120 days or 4 months (3 rearms), and extending the activation grace period is not a violation of the Vista End User License Agreement (EULA). All versions of Vista include Windows Vista Ultimate allow a 30-day free period without activation, except the corporate-oriented Vista Enterprise, which supports only a three-day trial.

To extend, reset or restart the initial OOB grace period of Windows Vista to another 30 days, use the following steps: 

  1. Click on Vista Start button and key in Cmd in Start Search box.
  2. Press on Ctrl-Shift-Enter to open Command Prompt with administrative credentials (equivalent to “Run as Administrator”).
  3. In the Command Prompt, type the following command and press Enter when done: slmgr -rearm or you can use sysprep /generalize
  4. Reboot the computer.
  5. Rearm again when the remaining activation grace period timer counts down to 0 days.

Rearm option resets the computer’s activation timer and reinitializes some activation parameters.

How to reset activation on Windows Vista

The following activation timer reset process can be run a maximum of three (3) times. Each time it is run, the number of available resets is decremented. Most windows vista machines typically allow two (2) resets as most machines are built with an image that utilizes “sysprep/generalize” to create distribution media.

Resetting activation

1.       Launch a command window with elevated privileges (right-click, run as administrator).

2.       Reset the activation timer by running the script: cscript %windir%\system32\slmgr.vbs -rearm

Run the command prompt in administrator mode by using the browser to navigate to your windows \system32 directory, and then right-click the CMD.exe file and select “run as administrator”