Windows Activation, introduced in Windows XP, checks in with Microsoft when you install Windows or get a new Windows PC.This is an anti-piracy feature — it’s designed to annoy you if you’re using a non-genuine copy of Windows.
You will need to enter your encryption information here in order to connect to your network.
Luckily, Windows Activation has been toned down after its introduction in Windows XP.
Even if your PC fails activation, it will continue to function until you can fix the problem — unless you’re using Windows XP. Windows will prompt you to activate with Microsoft after you install it.
This article is intended for IT Professionals and systems administrators with legitimate corporate licenses for Windows XP Professional.
It is not intended for home users, hackers, or computer thieves attempting to crack the product ID on a pirated version of the Operating System.