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Sign in to Office - Microsoft Support
Sign in to www.office.com from a web browser and start using the apps on the web or access other web services associated with your account such as OneDrive.. How you sign in to an installed Office app depends on your device.
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 for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel for the web, Word for the web, OneNote for the web, PowerPoint for the web, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2019 for Mac, Word 2019 for Mac, Outlook 2019 for Mac, PowerPoint 2019 for Mac, OneNote 2019 for Mac, Office 2019 for Mac, 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, OneNote for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Project Online, Microsoft 365 for Mac
Microsoft Store & billing help
Explore Microsoft Store services From free shipping and returns to our 60-day price protection, we’re here to help you do more with best-in-class devices, software, games, and resources.
Install the Windows 8.1 Update (KB 2919355) - Microsoft Support
Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed
Excel help & learning
Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.
将 Xbox 控制器与主机配对 | Xbox Support
可以通过两种方式将 Xbox 无线控制器连接到主机:使用主机的“配对”按钮 进行无线连接和使用 USB 到 micro-USB 电缆(或 USB 到 USB-C 电缆)进行有线连接。
Enable TPM 2.0 on your PC - Microsoft Support
How to enable TPM. If you need to enable TPM, these settings are managed via the UEFI BIOS (PC firmware) and vary based on your device. You can access these settings by choosing: Settings > Update & Security > Recovery > Restart now. From the next screen, choose Troubleshoot > Advanced options > UEFI Firmware Settings > Restart to make the changes.
Windows 帮助和学习
查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持,并了解安装、更新、隐私、安全等方面的信息。
Параметры восстановления в Windows 10 - Служба поддержки Майкрософт
В течение ограниченного времени после перехода на Windows 11 вы можете вернуться к предыдущей версии Windows, выбрав Пуск > Параметры > Система > Восстановление .Рядом с пунктом Вернуться нажмите Вернуться.
Download files from the web - Microsoft Support
Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.
Microsoft Support
Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.