若要将其关闭，请将设置切换为“关闭”。 关闭 Microsoft Defender 防火墙可能会使设备（以及网络，如果有）更容易受到未经授权的访问。 如果有某个需要使用的应用被阻止，则可允许它通过防火墙，而不要关闭防火墙。

Set Bing as the default search engine in your favorite browser to make every search count.

* Se você não tiver uma chave do produto (Product Key) ou uma conta. Algumas versões do Microsoft 365, como Office Professional Plus 2021, Office Standard 2021, ou um aplicativo autônomo, como Word 2021 ou Project 2021, não têm uma conta Microsoft associada, ou uma conta corporativa ou de estudante.. As etapas para instalar essas versões podem ser diferentes, dependendo se você obteve ...

了解如何将内容从一台设备屏幕镜像或投影到另一台设备。 注意: 无线显示应用在运行 Windows 11 版本 22H2 及更高版本的设备上可用。如果运行的是早期版本的 Windows，请在任务栏的搜索框中输入 “连接”，然后在结果列表中选择“连接”，从而启动 “连接” 应用。

过去 5 年交付的大多数电脑都能够运行受信任的平台模块版本 2.0 (TPM 2.0) 。 需要 TPM 2.0 才能运行Windows 11 ，作为安全相关功能的重要构建基块。 TPM 2.0 在 Windows 11 中用于许多功能，包括用于标识保护的Windows Hello和用于数据保护的 BitLocker。

Internet Explorer 11 support ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can open it with Internet Explorer mode in Microsoft Edge.

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes.. To contact us in Outlook.com, you'll need to sign in.

DATEVALUE 函数将存储为文本的日期转换为 Excel 识别为日期的序列号。 如果工作表包含采用文本格式的日期并且要对这些日期进行筛选、排序、设置日期格式或执行日期计算，则 DATEVALUE 函数将十分有用。

Note: To upgrade to Windows 11, devices should meet the Windows 11 minimum system requirements.Some Windows 10 features aren't available in Windows 11. System requirements to experience some Windows 11 features and apps will exceed the Windows 11 minimum system requirements.Find Windows 11 specs, features, and computer requirements

Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update.