Before activation When installing a
retail copy of Windows or Office, the user is asked to input a unique product key supplied on a
certificate of authenticity included with the program, which is later verified during activation. If Windows is pre-installed on a computer by an
original equipment manufacturer (OEM), the operating system is automatically activated without the need for interaction from the user. In this case, the copy of Windows installed does not use the product key listed on the certificate of authenticity, but rather a master product key issued to OEMs called a
System Locked Pre-installation (SLP) key. On each boot, Windows confirms the presence of specific information stored in the
BIOS by the manufacturer, ensuring the activation only remains valid on that computer, even if the product key is used on another machine. • In
Windows Vista RTM, after a grace period of 30 days, the operating system will boot only into a reduced functionality mode. The reduced functionality varies based on whether the operating system is simply out of grace or has undergone a failed activation. In the former case, built-in games and premium features like
Windows Aero are disabled, and the system is rebooted every hour; in the latter case, certain premium features are disabled and some content is not available from
Windows Update. • In
Windows Vista SP1,
Windows Vista SP2,
Windows 7,
Windows Server 2008, and
Windows Server 2008 R2, after a grace period of 30 days (60 days for Windows Server 2008), the operating system will display a notice in the bottom right of the desktop stating that the copy of Windows is not genuine, and set the desktop background to black. This includes allowing only critical and security updates to be downloaded from Windows Update and giving periodic reminders to activate the operating system. However, the operating system otherwise functions normally. • In
Windows 8,
Windows 8.1,
Windows 10,
Windows 11,
Windows Server 2012,
Windows Server 2012 R2, and
Windows Server 2016 and later, the 30-day grace period has been removed. If the operating system is not activated, there is a watermark showing the edition of Windows or a message telling the user to activate Windows on desktop. Personalization features such as changing the wallpaper are disabled. In Windows 8 and 8.1, the ability to change the desktop wallpaper is still possible, however changing the
Start screen color & design and lock screen wallpaper are disabled. Notifications also appear occasionally telling the user to activate. However, the operating system otherwise functions normally. • In
Office XP,
Office 2003,
Office 2007,
Office 2010, and
Office 2013 and later, after a grace period of; • 30–60 days for Office 2010, • 14–60 days in Office 2013, • opening the program 25 times for Office 2007, • opening the program 50 times for Office 2003 and XP, • or opening the program 10 times for
Visio 2002, the programs will enter a reduced functionality mode, where files can be viewed but not edited. When activation takes place, the program saves a record of the verification data in the user's computer. If the system is booted up with significant hardware changes, the application will likely require reactivation to prevent the same copy of the program being installed on two different systems. On
Windows 10 and
Windows 11, the activation process can also generate a "digital entitlement", which allows the operating system's hardware and license status to be saved to the activation servers, so that the operating system's license can automatically be restored after a clean installation without the need to enter a product key. Newer builds of Windows allow such licenses to be linked to a user’s
Microsoft account. A maximum of 10 retail transferable digital licenses can be linked to a single Microsoft account. OEM digital licenses are not transferable and therefore do not count against this limit.
During activation Activation is performed with a utility supplied with Windows and Office called the Activation Wizard. It can be performed either over the
Internet or by
telephone. The Activation Wizard generates verification data primarily based on information about
hardware in the computer. In
Windows XP, information about the following ten categories of hardware is included: •
Graphics card •
Hard disk drive • System partition
volume serial number •
IDE adapter •
Network interface controller MAC address •
Optical disc drive (e.g. DVD-ROM) •
Processor type • Central processing unit
serial number •
RAM amount range (e.g. 0-512 MB) •
SCSI adapter Every time a PC is booted, Windows XP checks the hardware configuration against that which existed at the time of installation. From the above list, six or more items must change for the reactivation to be required. The position is complicated in that the network card MAC address is regarded as three items. Therefore, if the network card is not changed, a change to six or more other items will trigger a reactivation. If the network card is changed, then just three other changes will trigger a reactivation. PCs that are considered dockable are treated more leniently as hardware will, by definition, regularly change. A dockable PC is one that is equipped with a docking port that connects to an expansion unit that features extra ports or hardware (these are usually ancillary units custom designed for some laptop PCs). A dockable PC is allowed three extra changes beyond a non-dockable PC before reactivation is required. The verification data is also based on the product key entered during activation. In some cases, the product key is checked against a list of known illegally distributed keys. Single Language (South East Asia) Certain retail and OEM copies of Windows and Office sold in certain countries classified as
emerging markets have geographical activation restrictions, which only allow the user to activate the product within the indicated region. In
Windows 7 and later, significant hardware changes (e.g.
motherboard) may require a re-activation. In Windows 10 and 11, a user can run the Activation Troubleshooter if the user has changed hardware on their device recently. If the hardware has changed again after activation, they must wait 30 days before running the troubleshooter again.
After activation If activation completes successfully, the user can continue to use the application without any further issues or impediments. Also, if the key gets blacklisted, the application will continue to run as normal unless a clean install and activation is performed after its key has been blacklisted. ==Usage==