See a list of options available for starting Windows in diagnostic modes such as safe mode.

Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Learn how to set up Microsoft Family Safety to manage screen time, filter content, and share location with your family members.

Find out how to stop Windows Security from alerting you about or blocking a trusted file, file type, or process, by adding it to the exclusions list.

在浏览 Web 时，Microsoft Edge 可以轻松保存密码。 在桌面或移动设备上的 Edge 浏览器中输入新密码时，Microsoft Edge 会询问你是否要记住用户名和密码。

Get help with using mail, calendar, and contacts on Outlook.com.

Get help and support for Microsoft Edge. Find Microsoft Edge support content, how-to articles, tutorials, and more.

In Excel, Outlook, PowerPoint, or Word, for Windows and Mac, you can format (add, change or remove) error bars in a chart.

移动或复制单元格和单元格内容 文章; 更改 Excel 中的列宽或行高 文章; 查找或替换工作表上的文本和数字 文章; 合并和撤消合并单元格

Find answers to common questions about genuine Windows software.