Find operating system info in Windows 8.1 or Windows RT 8.1. To find out which version of Windows your device is running, press the Windows logo key key + R, type winver in the Open box, and then select OK.. If your device is running Windows 8.1 or Windows RT 8.1, here’s how to learn more:

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows、Surface 等操作方法的文章、视频和培训。 了解 Microsoft Copilot 在每天使用的应用中使用 AI 助手实现可以想象的任何内容。

Tip: If you're using a wireless display adapter, connect to an HDMI port on newer TVs, then wirelessly connect your PC to it.After connecting your wireless display adapter to your TV, go to your Windows 11 PC, press Windows logo key + K to open Cast, then select your wireless display adapter.

按住 Xbox 按钮 3 秒打开控制器。 打开控制器时，Xbox 按钮 将开始闪烁。长按控制器顶部的的“配对”按钮 （凸起按钮）。 控制器上的 Xbox 按钮 将加速闪烁 - 这意味着控制器正在搜索电脑。在电脑上，按“开始”按钮 ，然后选择“设置” > 设备（在 Windows 11 上：设置 > 蓝牙和设备）。

With PowerPoint for the web you create presentations right in your browser. Create and save your presentations in your OneDrive, and edit and share them online.

In Outlook on the web, you can import events from an .ics file to your existing calendar or subscribe to a calendar online and receive automatic updates (known as an ICS subscription or an iCal subscription).

了解如何排查 Windows 中的文件资源管理器问题。 若要在Windows 10中打开文件资源管理器，请选择任务栏上的图标，按键盘上的 Windows 徽标键 + E，或选择用户图标) 正下方的“开始 > 文档 (”。 如果无法打开文件资源管理器，下面是一些可以尝试的方法。

Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.

Get info on how to find your IP address in Windows. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Outlook.com, Hotmail, Live veya MSN e-posta hesabınızda oturum açamıyorsanız veya nasıl oturum açıp kapatacağınızı bilmiyorsanız bu çözümleri deneyin. Outlook.com'da destek almak için buraya tıklayın veya menü çubuğundan Yardım’ı seçin ve sorgunuzu girin.’ı seçin ve sorgunuzu girin.