Get expert help, training, and support for your Microsoft PC accessories with easy access to resources and guidance.

Windows 10, version 21H2 update history; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651) June 11, 2024—KB5039211 (OS Builds 19044.4529 and 19045.4529)

Skype help & learning. Limited emergency calling Skype is not a replacement for your telephone and has limited emergency calling capabilities depending on your country.

从 Microsoft 获取免费的 Windows 主题，以个性化设置电脑的背景、颜色和声音。

Windows 10, version 1909 and Windows Server, version 1909 update history; End of service statement; May 10, 2022—KB5013945 (OS Build 18363.2274)

To reset the Hosts file back to the default, follow these steps: 1. Open Notepad. To do this, search for “Notepad” using Cortana, and then tap or click the Notepad icon.. 2. Copy the following text, and then paste the text into the file:

Find the information you need to build, run, grow, and support your small business in Microsoft 365.

Help for Microsoft mobile apps on Android and iOS devices. Find how-to articles and video tutorials for Samsung Galaxy and iPhone. Learn how to link your Microsoft 365 mobile apps, including Outlook, OneNote, and Your Phone.

Learn all about games and apps for Xbox and get help with any problems you're having.

获取 Microsoft Edge 的帮助和支持。 查找 Microsoft Edge 支持内容、操作方法文章、教程等。