Install or reinstall classic Outlook on a Windows PC
More help If you're using a work or school account and couldn't install classic Outlook following the steps above, contact the IT admin in your organization for assistance.
Applies To:
New Outlook for Windows
Download and install or reinstall Office 2021, Office 2019, or Office ...
Learn how to install Office 2021, 2019, or 2016 on your PC or Mac.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Office 2016 for Mac
Find your Windows product key - Microsoft Support
Learn how to find a Windows product key for activation, and when you'll use a digital license instead.
Applies To:
Microsoft account dashboard
Download free, pre-built templates - Microsoft Support
Find and download free templates to create documents like calendars, business cards, letters, greeting cards, brochures, newsletters, or resumes.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Project Online Desktop Client, Publisher for Microsoft 365, Excel 2024, Word 2024, PowerPoint 2024, Access 2024, Project Standard 2024, Excel 2021, Word 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Excel 2019, Word 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Excel 2016, Word 2016, PowerPoint 2016, Access 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, InfoPath 2013, Microsoft Office, Microsoft365.com
February 10, 2026—KB5075912 (OS Builds 19045.6937 and 19044.6937 ...
Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and ...
Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or ...
Learn how to install, reinstall, or activate Microsoft 365 or Office 2024 on a PC or Mac.
Applies To:
Office 2024, Office 2024 for Mac, Microsoft 365 for home, Microsoft365.com, 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
March 21, 2026—KB5085516 (OS Builds 26200.8039 and 26100.8039) Out-of ...
This out-of-band update for Windows 11, version 25H2 and 24H2 (KB5085516) is cumulative. It includes updates from previous security and non-security releases, along with an additional fix. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information ...
Change the email address or phone number for your Microsoft account
Learn how to change Microsoft account email address or phone number using aliases to sign into your Microsoft account.
Applies To:
Microsoft account dashboard
Xbox Update Preview Release Notes | Xbox Support
Omega Ring (2605.260429-2200) Hey Xbox Insiders! We are releasing a new Xbox Update Preview to the Omega ring today. Continue reading below to learn all about what's included with this update.
手机连接要求和设置 - Microsoft 支持
手机连接允许将 Android 或 iPhone 连接到 Windows 电脑，从而可以直接在计算机上访问许多手机功能。 你可以轻松地阅读和回复短信、查看移动设备中的最近照片、使用喜欢的移动应用、拨打和接听电话，以及从电脑上的移动设备管理通知。