查看“Windows 产品激活”的源代码

{{Infobox Windows component
|name = Windows Product Activation
|logo = WinXPActivation-Icon.png
|screenshot = WindowsXP-5.1.2600-WPA.png
|introduced in = [[Windows XP build 2410]]
|caption = Windows Product Activation in [[Windows XP]]
|type = Digital Restrictions Management
}}
'''Windows Product Activation''' (based on Microsoft's Product Activation technology first seen in Office XP) is a DRM technology employed by [[Windows XP]] and later that requires the user to activate their copy of Windows online as a means of enforcing the relevant provisions of the license agreement about using the product on multiple computers. The consequences of not activating Windows within a so-called grace period differ with each version and edition, ranging from the user not being able to log in at all or certain features being unavailable, to the user being reminded to finish the activation process via a watermark or a periodic modal warning.

Activation is distinct from registering Windows, an optional service introduced earlier that allowed the user to sign up for notifications about new Microsoft products, updates and other promotions.

==History==
===Windows XP===
[[File:WindowsXP-5.1.2410-WPA.png|thumb|Windows Product Activation in Windows XP build 2410]]
The first build to have Windows Product Activation is [[Windows XP build 2410]], but it is non-functional until [[Windows XP build 2428|build 2428]], where it prevents login after 14 days; however, it still can be deactivated over the registry, and [[Safe mode]] bypasses it as well. It received its final appearance in [[Windows XP build 2465 (idx01)|build 2465]]. [[Windows XP build 2542]] extends the grace period to 30 days, although it was reverted back to 14 days in [[Windows Longhorn build 3683]]. [[Windows Longhorn build 4029 (main)]] also extends the grace period to 60 days.

=== Longhorn ===
<div class="hatnote">主词条：[[Windows Longhorn Build 4093.0.main.040819-1215#原型 Windows 产品激活|Windows Longhorn Build 4093.main § 原型 Windows 产品激活]]</div>
[[文件:4093 WindowsActivation2ndDialogue.png|thumb|Windows Longhorn Build 4093 中基于 Avalon 的 Windows 产品激活]]
在 [[Windows Longhorn Build 4093.0.main.040819-1215|Windows Longhorn Build 4093]] 中，它被重写为基于 [[Avalon]] 的应用程序，但在很大程度上并不完整。它的 <code>LicenseUI.exe</code> 包含在 .NET Framework 库文件夹（<code>C:\Windows\Microsoft.NET\Windows\v6.0.4030\</code>）中，因此与无法正常工作的 OOBE 完全分离。先前，[[Longhorn]] 的 408x 版本中没有 Windows 产品激活功能。

==Functionality==
Windows Product Activation can be invoked by launching <code>msoobe.exe</code> with the <code>/A</code> parameter. It offers activation over the internet (which requires updating root certificates beforehand) and over telephone, as well as registration at Microsoft. The user can also activate Windows in the OOBE.
[[Category:Introduced in Windows XP]]
[[Category:Windows components]]