Aprende a solucionar problemas de Bluetooth en Windows. Resuelve problemas al conectar un dispositivo o accesorio Bluetooth.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Voice Recorder has lots of options like adding markers to identify key moments, and the ability to trim, rename, and share your recordings.

Learn how to install Windows 7 Service Pack 1 (SP1). Includes info about how to get the download, requirements, and more.

Windows Hello. Windows Hello 可使你通过你的面部、虹膜、指纹或 PIN 登录到你的设备、应用、在线服务和网络。 即使你的 Windows 设备可以使用 Windows Hello 生物识别，也不必这么做。

Get info on how to sign up for, extend, or check the latest offers on subscriptions on your Xbox console.

Learn more about how to fix problems with the Windows Start menu, and what to do if the Start menu won't open.

了解如何更改 Windows 中显示器的刷新率，以确定在屏幕上显示运动的平滑程度。

Find out more about Xbox digital codes and gift cards, and how to troubleshoot issues redeeming content.

A workbook is a file that contains one or more worksheets to help you organize data. You can create a new workbook from a blank workbook or a template. By default, a new workbook contains three worksheets, but you can change the number of worksheets that you want a new workbook to contain. You can also add and remove worksheets as needed.