Options de connexion de Windows 10 et protection des comptes
Découvrez comment accéder à vos options de connexion Windows et les gérer. Utilisez un mot de passe, un Windows Hello ou une clé de sécurité pour déverrouiller votre appareil.
View your data on the privacy dashboard - Microsoft Support
Learn how to use the privacy dashboard in your Microsoft account and manage your privacy settings for products you use.
Applies To:
Microsoft account dashboard
A driver can't load on this device - Microsoft Support
Find out the steps you can take if you receive a message telling you a driver can't load on your device.
Content adaptive brightness control in Windows - Microsoft Support
Learn about adaptive brightness and contrast in Windows 11 and how to turn it on or off.
激活 Office - Microsoft 支持
如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。
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, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 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 Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Office.com, Project for Office 365
Stay safe with a genuine Office license - Microsoft Support
Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.
Applies To:
Office 2019
About Genuine Windows - Microsoft Support
Find answers to common questions about genuine Windows software.
Find safe mode and other startup settings in Windows 10
Find out how to boot into safe mode in Windows 10 from Settings and the sign-in screen, as well as how to exit safe mode.
Windows background apps and your privacy - Microsoft Support
Learn more about what background apps are in Windows and how to turn them off when you're not using them.
Install the Windows 8.1 Update (KB 2919355) - Microsoft Support
Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.