Important: If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses.For this reason, we strongly recommend that you update to the latest version of Windows. Each version of Windows is supported for 18 months.

了解如何为 Xbox 设备获取服务。 如果已注册了设备，请登录到设备服务页，以查看该设备的保修状态。

Manually download a language for Cortana speech. Go back to Settings > Time & language > Language, select your new language, and then use the up-arrow button to move it to the top of the list and make it the default.

Erfahren Sie, wie Sie die Windows Update-Problembehandlung ausführen, um Fehler beim Herunterladen oder Installieren von Windows zu beheben.

Browse on the go with the new Microsoft Edge for Android and iOS devices. Microsoft Edge offers better protection and privacy, and can sync your favorites, passwords, and more across your desktop and mobile devices.

On your PC, go to Xbox.com and select Sign in.If there are problems with your account, the instructions will help you solve them. If you can’t go beyond the sign-in screen, select Forgot my password and follow the instructions.

Important: Workbook links are considered potentially unsafe and must be enabled when you open a formula workbook.When you open a formula workbook, click Enable Content in the Message Bar to allow the workbook links to function. If you don't, Excel keeps the most recent values and disables refreshing the links with values from the data workbook.

Add members to a shared channel. When creating a shared channel, the default setting is Share this channel with everyone on the team.. After you've chosen Shared channel as the channel type in the selection box, type the names of the people in your org you want to add to the channel and select from the list.

Refunds are typically issued for requests meeting the following criteria: Requests are made within 14 days of the purchase date; Requests are for games in which you haven’t accumulated a significant amount of play time

Discover the latest updates for Windows 10, including improvements and fixes, known issues, and guidance on how to get the update.