Activate Windows

April 2018

You have a period of 30 days to activate your Windows license (official). Beyond that, you can not use this system and you can not activate Windows.

Two solutions come to you:
  • activation internet
  • activation by phone.

In both cases, Windows will ask you to activate your license until it is done.
This is the easiest method.

  • Choose method By Internet
  • Follow the instructions. The system checks the validity of your license number and, if it is not considered a pirated license, your license is activated automatically.

You can use this method in the following situations:
  • for those who have no internet connection.
  • for those who encounter a problem trying to activate over the internet (a configuration change or too many relocations),
  • for those who have waited too long to activate Windows!

Warning! Preferably use a phone and not mobile!
  • Choose method By phone
  • Choose your country, which will allow you to specify the number to call,
  • Dial the phone number,
  • In the dialog, you have a number of the license, grouped of digits (3 items), you must input them via telephone keypad,
  • The system checks the validity of your license from the input that you just made,
  • If all of the information are entered correctly and validate, your license will be activated.

Note that this procedure:
  • allows you to re-enter the code, in case of input error,
  • listen to each ID number entered.

To do this, listen carefully to the initial message telling you which key to use on the telephone keypad in case of error.

If the activation system rejects your application, this means that:
  • Either you have entered the wrong combination,
  • Either way, your license is considered invalid, pirated.
  • Via the GUI
    • Start
    • All programs
    • Accessories
    • System Tools
    • Click on Activating Windows
  • By command line:
    • Start
    • Execute
    • oobe/msoobe/a 

If the activation system refuses your license, and you're are certain that no mistake were made (in the case of activation by phone):
Contact your reseller and ask for your original Windows or at worst ask for a refund.
You can contact Microsoft if you are uncertain about what should be your next move.

You can also contact Microsoft to inform them of software piracy by going to:
Microsoft dedicated page for piracy issues.
As a reminder, and despite of many assertions, you can use your license number on a single machine at a time.
Suppose you have already activated your license on a machine A, it allows you to benefit from the new updates. Considering that you assemble a new machine B and just to save some money, you make use of the samelicense as the machine A.

You may be able to register new machine B. With some luck!

But the fact you can update the machine B, will now make it impossible to make any updates on the machine A, which will be then considered as a machine running an hacked version Windows.

The choices are:
  • Either buy a Windows license,
  • Either install a free operating system such as GNU/Linux, or BSD.

Published by hyts78. Latest update on December 20, 2016 at 06:27 AM by Jeff.
This document, titled "Activate Windows," is available under the Creative Commons license. Any copy, reuse, or modification of the content should be sufficiently credited to CCM (
It is now safe to turn off your computer!
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