Learn how to add threaded comments and notes to cells in your Excel worksheet.

Learn how to identify a phishing scam, designed to steal money via fake emails.

使用电脑健康状况检查应用可以获取有关 Windows 设备运行状况的最新信息，从而帮助你采取措施提高设备性能和排查性能问题。

After you create a PivotTable, you can change the range of its source data. For example, you can expand the source data to include more rows of data.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Learn how you can manage cookies and site data you've temporarily allowed in Microsoft Edge.

Discover how to boost your browsing speed and save battery life with Microsoft Edge's performance features, such as sleeping tabs and efficiency mode.

Learn how to use Feedback Hub to report problems or send suggestions to Microsoft.

Contacts can be exchanged between Outlook and Google Gmail to save time and avoid manually re-entering your contacts.

Learn more about the error messages you might receive when you try to upload files on the OneDrive website.