<p><a href="http://wincert.net/wp-content/uploads/2015/01/windows-7.jpg"><img class="alignnone size-full wp-image-546" src="http://wincert.net/wp-content/uploads/2015/01/windows-7.jpg" alt="Windows 7 Box" width="720" height="340" /></a><br />
By design, Windows 7 offers a command which extends your grace period period up to 120 days. During this period you&#8217;re able to receive Windows updates and security patches. So, basically, you can use Windows 7 without providing a key for 120 days.</p>
<p>This action can be done on any version of Windows 7 and it&#8217;s completely legal.</p>
<p>So, how can we do it and what is the best way to do it?</p>
<p>Once you install a fresh copy of Windows 7, you can use the Computer Properties to view the remaining grace period.<!--more--></p>
<p>Hit Windows ORB and type &#8216;System&#8217; select the &#8216;System&#8217; link from the start menu under &#8216;Control Panel&#8217; section.</p>
<p>Scroll down and under &#8216;Windows Activation&#8217; part you will see the remaining grace period.</p>
<p>Use the Windows normally until the grace period ends, then open the command prompt and type the following command:</p>
<p><strong>slmgr -rearm</strong></p>
<p>After a moment you will see a confirmation message saying that command has completed successfully. Reboot afterwards.</p>
<p>When you check the System Properties again, you will see that the grace period has been extended to 30 days (again).</p>
<p>This command can only be run 3 times! So, to use the maximum grace period of 120 days, you should use it only when your current 30-day grace period window has expired.</p>