Remember you have up to 3 grace periods only to remain legal and still free. If you need to extend it to yet another 30 days, do it after the current grace period is used fully. Now your grace period is extended to another 30 days. Now run the command slmgr.vbs with the rearm option as shown below Just open a command prompt with administrative power as shown below Hope you installed your OS with out activation key and it is counting the days left for activation every time you log in. It was first introduced along with windows vista and Microsoft is continuing it for all the new generation OS I have a windows 7 system that I just bought and need to reinstall from a. May be Microsoft does not wish you to use the option regularly so they kept it as a command prompt option. All the things we are discussing here is legal and in accordance with Microsoft policy. It is not a discussion on how you can break in to the windows activation process. The location for the KMS Host Key is the same as Windows Server 2016. you can use your windows for 120 days with out paying anything to Microsoft. When this grace period expires, users can rearm Windows 7 for an additional 30 days, and do this up to 3 times, effectively allowing the OS to run legally for 120 days without a genuine product key. I've scrubbed out all of the Acer crapware, installed our applications, tweaked the drivers, and set up a whole. Yes, from windows Vista onward Microsoft has made some generous step so that you can use the windows free of any charge for 30 days from time of installation with out using any CD keys ( yes you know It ).īut how many among us are aware that Microsoft is more generous in extending that activation process 3 more times if you did not find the money to purchase their software ?. The computer is an Acer desktop that has Windows 7 professional pre-installed on it.

And you are not in a situation for an immediate purchase of your operating system, or you may be just experimenting with the features of the OS for academic purpose and you need to continue using it. Your windows installation is more than 20 days old and you are almost on the limit of using your windows legally with out paying anything to Microsoft.

Windows 7 rearm