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Turn Windows Security on or off - Microsoft Support
Windows Security is pre-installed on Windows 10 and ready for you to use at any time.
How to sign in to a Microsoft account - Microsoft Support
Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live.
Applies To: Microsoft 365 for home, Outlook.com, Microsoft 365 for Mac, Microsoft 365 for Windows, Microsoft account dashboard, Microsoft Edge, Microsoft Teams, OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
IF function - Microsoft Support
How to use the IF function in Excel to make logical comparisons between data values.
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
如何安装最新版本的 DirectX - Microsoft 支持
本文介绍如何获取最新版本的 DirectX 以启用系统上的游戏和多媒体应用程序。
Add or manage an iCloud email account in Outlook
Select Add Account, in the Suggested account dropdown, enter the iCloud account you want to add, and select Continue.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, New Outlook for Windows
Télécharger et installer ou réinstaller Office 2019, Office 2016 ou ...
Découvrez comment installer Office 2013 sur PC ou Office pour Mac 2011.
Applies To: Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Manage user accounts in Windows - Microsoft Support
Learn how to add user accounts in Windows 10 and Windows 11. With an account, each person has separate files, browser favorites, and a private desktop.
How to adjust power and sleep settings in Windows
To adjust power and sleep settings in Windows 10, go to Start , and select Settings > System > Power & sleep.. Under Screen, select how long you want your device to wait before turning the screen off when you're not using your device.
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.
Get help with your Microsoft account - Microsoft Support
Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.
Applies To: Microsoft account dashboard