Windows 中的网络问题疑难解答. 如果无法获取电子邮件、浏览 Web 或流式传输音乐，则很可能未连接到网络，无法访问 Internet。

Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

Pick a team and channel. A team is a collection of people, conversations, files, and tools — all in one place. A channel is a discussion in a team, dedicated to a department, project, or topic.. The best way to get familiar with teams and channels is to pick a team and channel and start exploring! Select Teams on the left side of the app and then pick a team.

Learn how to create a OneDrive backup on your PC. Set up OneDrive PC folder backup to access, manage, stop, or fix problems with PC folder backup.

Windows backup and sync settings sync the settings you choose across all your Windows devices that you've signed in to with your Microsoft account.

Erfahren Sie, wie Sie Ihr Windows-Kennwort ändern oder zurücksetzen, wenn Sie es vergessen oder verloren haben.

Download the latest internet browser recommended by Microsoft from the official support page.

Learn how to create a Gantt chart in Excel. Create a Gantt chart to present your data, schedule your project tasks, or track your progress in Excel.

Learn how to make items on the screen appear larger by using Magnifier in Windows.

Sometimes add-ins can conflict with Outlook. Starting Outlook in safe mode, which starts Outlook without add-ins loaded, can tell you if an add-in is the source of the problem.