Activate Windows - Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
Unlicensed Product and activation errors in Office
Try guided support. If Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore all features of Office, you'll need to fix the problem that's causing activation to fail.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Project Online Desktop Client, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, InfoPath 2013
Why can't I activate Windows? - Microsoft Support
Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. When you get a message that says Windows can't be activated, there are several possible reasons why.
KB5001692: Windows Activation fails with error 0xc004c003 on devices ...
Summary. Windows 10, version 2004 and 20H2 devices that have the January 2021 nonsecurity preview release, or a later version, installed might experience Windows activation failures containing error code 0xC004C003. Activation. Edition: < edition name >.
Product activation for Windows – online & support telephone numbers
Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. There are three methods to which you can activate your product: Online via the internet, by telephone using our automated systems, and by a live support advocate.
Windows activation or validation fails with error code 0x8004FE33
Symptoms. Windows activation or validation fails when you try to activate Windows operating systems over the Internet. Additionally, you may receive one or more of the following errors: Error code: 0x80004005 Description: License Activation (SLUI.exe) failed.
Activate Office after reinstalling or installing on a different device
If you haven't installed Office on another computer yet, follow the instructions in Install Office on your PC or Mac. Follow the steps in Activate by telephone, described above. Uninstall Office from the original computer. Read the Software License Terms to review terms on transferring Office. Open an Office application, such as Word.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Office 2013
如何激活 Windows 10 专业工作站版和 Windows 10 专业教育版 - Microsoft 支持
如何激活 Windows 10 专业工作站版和 Windows 10 专业教育版 - Microsoft 支持. Windows 10. 与其他版本的 Windows 10 不同，Windows 10 专业版教育机构和 Windows 10 的工作站必须通过 Internet 激活。 在将电脑连接到 Internet 之前，你不会收到激活通知或提醒。 如果遇到 Internet 连接问题，请参阅 解决 Windows 中的网络连接问题 。 电脑连接到 Internet 时，将自动进行激活。 了解有关 Windows 10 激活的详细信息. 注意: 这些版本不能使用电话激活。 不应该使用 SLUI 04 命令 - 它不会生成可用的安装 ID 或确认 ID。