Activate Windows - Microsoft Support
During installation, you'll be prompted to enter a product key. Or, after installation, to enter the product key, select the Start button, and then select Settings > System > Activation > Update product key > Change product key. Change product key in Settings
Where to enter your Office product key - Microsoft Support
If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription.
Find your Windows product key - Microsoft Support
A Windows product key is a 25-character code used to activate Windows. It looks like this: PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.
Activate Office - Microsoft Support
To use Microsoft 365 on your new device, you can activate Microsoft 365 as a 1-month trial of Microsoft 365 Family. You can also buy Microsoft 365 or a non-subscription version of Office, add Microsoft 365 to an existing Microsoft 365 subscription, or enter a product key from a new product key card.
Using product keys with Office - Microsoft Support
If you bought Microsoft 365 through the Microsoft Store you can enter your product key there. Go to www.microsoftstore.com. In the upper right-hand corner, select Sign in and enter the user ID and password you used to buy Microsoft 365.
Change your Office product key - Microsoft Support
Enter your Office 2016 product key, and then select Install this product instead. If your product key is new, follow the prompts to complete the redemption process. Office begins the update process.
Reactivating Windows after a hardware change - Microsoft Support
If you don't have a digital license, enter your product key. If Windows 11 wasn't pre-installed on your device when purchased and you used a product key to upgrade to Windows 11, then you'll need that same product key after the hardware change.
Product keys for Windows - Microsoft Support
A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow. Windows 11 and Windows 10: In most
Get help with Windows activation errors - Microsoft Support
If you have a Windows product key you used on your device before the hardware change, enter it by selecting Start > Settings > System > Activation , and then selecting Change product key. Additionally, Microsoft provides an exception path for transferring a Windows License after a hardware change.
Find your Windows product key - Microsoft Support
A Windows product key is a 25-character code used to activate Windows. It looks like this: PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.
Product keys for Windows - Microsoft Support
Windows 11 and Windows 10: In most cases, Windows 11 and Windows 10 activates automatically using a digital license and doesn’t require you to enter a product key.