Miracast wireless displays. Wirelessly connect your PC to a TV, projector, another PC, or other kind of external display that supports Miracast.

The notification area is located at the right end of the taskbar. It contains icons you might find yourself selecting or pressing pretty often: battery, Wi-Fi, volume, Clock and Calendar, and action center.

Learn how to download Microsoft Support and Recovery Assistant to help fix problems with Microsoft 365, Office, or Outlook.

即使已开启其他防火墙，开启 Microsoft Defender 防火墙也很重要。 它保护你免遭未经授权的访问。 若要打开或关闭 Microsoft Defender 防火墙，请执行以下操作：

Improve your writing skills with Word's tools for spelling, grammar, and clarity. Find out how to check and correct errors in your documents.

Find help and support content for Microsoft Phone Link. Learn time-saving tips and explore how you can use Phone Link to stay productive.

Learn what you can do if you're not receiving account aign-in verification codes.

Use the XLOOKUP function when you need to find things in a table or a range by row. For example, look up the price of an automotive part by the part number, or find an employee name based on their employee ID. With XLOOKUP, you can look in one column for a search term, and return a result from the same row in another column, regardless of which side the return column is on.

How to use Storage Sense to free up hard drive space on your Windows device.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.