Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Disk cleanup in Windows - Microsoft Support
Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.
Use voice typing to talk instead of type on your PC
To use voice typing, you'll need to be connected to the internet, have a working microphone, and have your cursor in a text box. Once you turn on voice typing, it will start listening automatically.
在 Excel 中将 IF 与 AND、OR 和 NOT 函数配合使用 - Microsoft 支持
如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。
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, Excel Web App, Excel for Windows Phone 10
Getting ready for the Windows 11 upgrade - Microsoft Support
Learn how to get ready for the Windows 11 upgrade, from making sure your device can run Windows 11 to backing up your files and installing Windows 11.
Comment se connecter et se déconnecter d’Outlook.com
Si vous ne parvenez pas à vous connecter à votre compte de messagerie Outlook.com, Hotmail, Live ou MSN, ou si vous ne savez pas comment vous connecter ou vous déconnecter, voici quelques solutions.
Applies To:
Outlook.com
新しい Microsoft アカウントを作成する方法 - Microsoft サポート
新しい Microsoft アカウントを作成して Microsoft サービスを使用する方法について説明します。
Repair Outlook Data Files (.pst and .ost) - Microsoft Support
If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Come accedere a Hotmail - Supporto tecnico Microsoft
Hotmail è ora Outlook.com. Scopri come accedere a Outlook.com per usare l'account di posta elettronica Outlook, Hotmail, Live o MSN.
Applies To:
Outlook.com
Find and install your Microsoft downloads from Microsoft Store
Learn how to find and install digital downloads from Microsoft Store. See instructions to download and install software directly purchased from Microsoft.
Applies To:
Microsoft account dashboard