了解如何查找用于激活的 Windows 产品密钥，以及何时改用数字许可证。 如果你在 Microsoft Store 应用中购买了Windows 10或Windows 11 专业版升级，你将在发送确认购买的确认电子邮件中收到数字许可证而不是产品密钥。

Summary. This article describes the security and cumulative update for 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2. Security Improvements

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

获取有关从 Microsoft Store 安装快速助手的帮助。 若要将快速助手固定到任务栏，以便快速返回到任务栏，请在打开快速助手后，右键单击 (或按住) 任务栏上的图标 > 固定到任务栏。 如果旧应用图标仍显示在设备上，请确保选择新应用图标。

Where can I find my BitLocker recovery key? BitLocker likely ensured that a recovery key was safely backed up prior to activating protection. There are several places that your recovery key may be, depending on the choice that was made when activating BitLocker:

Surface model. Link. Surface Pro X. Use Windows Update to keep your Surface Pro X drivers and firmware up to date. Select Start > Settings > Update & Security > Windows Update .Commercial customers can learn more about servicing Pro X at Deploying, managing, and servicing Surface Pro X.. Surface Pro (11th Edition)

Choose Open all, or Open all in new window, or Open all in new InPrivate window.

File Explorer in Windows 11 helps you get the files you need quickly and easily. To check it out in Windows 11, select it on the taskbar or the Start menu, or press the Windows logo key + E on your keyboard.. How to use File Explorer:

在电脑上 在“设置”中检查网络状态。打开设置 >网络和 Internet。检查屏幕顶部的以太网连接状态。 请确保网络连接名称下面显示“已连接”。如果存在错误，例如显示“需要操作”的错误，请选择“以太网”以查看以太网连接设置。 如果一根以太网电缆不起作用，并且附近有其他以太网电缆，请 ...

说明 ROUND 函数将数字四舍五入到指定的位数。 例如，如果单元格 A1 包含 23.7825，而且您想要将此数值舍入到两个小数位数，可以使用以下公式： =ROUND(A1, 2) 此函数的结果为 23.78。 语法 ROUND(number, num_digits)