The sign-in options in Windows serve various purposes to enhance your user account security and sign in convenience. You can access the sign-in options from the Settings app.

若要使工作表的某一区域在滚动到工作表的另一区域时仍保持可见，请转到“视图”选项卡，在此选项卡中，可以“冻结窗格”，将特定的行和列锁定到位，也可以“拆分”窗格，创建同一工作表的单独窗口。

Compress the file. When you compress, or zip, your file, it decreases its size, and it might decrease it enough to fit within the Outlook size limits for attachments.The following articles describe how to compress and extract files for different Windows operating systems.

如果你有Windows 10 或更高版本，并且使用具有 Outlook.com、Live、Hotmail 或 MSN 地址的 Microsoft 帐户登录，则该帐户将添加到邮件和日历应用。 可以将该电子邮件帐户和许多其他电子邮件帐户添加到邮件和日历应用，以开始发送和接收电子邮件以及创建和 ...

To add a folder to the folder pane, do the following: In the left pane of Mail, Contacts, Tasks, or Calendar, right-click where you want to add the folder, and then click New Folder.

2. Install any applicable firmware updates. If you have a Surface device, see Security issue for TPM on Surface devices for more information and instructions.. If your device is not from Microsoft, locate the device manufacturer of your device in the following table, select the corresponding link, and apply the firmware update that's provide.

Here's how to customize what you see on the Start menu and taskbar: To see a list of your apps, select Start , then select the arrow next to All apps to expand that pane. Scroll through the alphabetical list.

Loại bỏ thiết bị Bluetooth, rồi thêm lại: Chọn Bắt đầu cài > Đặt > Bluetooth cho & thiết bị > của bạn .Trong Thiết bị, chọn Xem thêm tùy chọn cho thiết bị Bluetooth mà bạn đang gặp sự cố kết nối, sau đó chọn Xóa thiết > Có.Để tìm hiểu thêm về cách ghép nối lại thiết bị Bluetooth của bạn, hãy xem Ghép ...

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。

SWITCH 函数根据值列表计算一个值（称为表达式），并返回与第一个匹配值对应的结果。 如果不匹配，则可能返回可选默认值。 如果没有匹配值，且未提供默认参数，则 SWITCH 函数返回 #N/A! 错误。