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。

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.

Virtualization lets your PC emulate a different operating system, like Android™ or Linux. Enabling virtualization gives you access to a larger library of apps to use and install on your PC.

若要更改姓名，请选择“编辑名称”，进行更改，然后选择“保存”。 编辑名称 更改帐单或寄送地址 若要更改帐单或寄送地址，请选择“账单和寄送地址，进行更改，然后选择“保存”。 编辑地址 另请参阅 更改你的 Microsoft 帐户的电子邮件地址或电话号码

Other ways to open these file types. You can also right-click or double-click the .eml, .msg, or .oft file to open them in new Outlook. Right-click

Under Microsoft Defender Firewall, switch the setting to On.If your device is connected to a network, network policy settings might prevent you from completing these steps. For more info, contact your administrator.

Important: Copilot in Outlook only supports work or school accounts, and Microsoft accounts using outlook.com, hotmail.com, live.com, and msn.com email addresses at this time. Any Microsoft account using an account from a third-party email provider, such as a Gmail, Yahoo, or iCloud, can still use Outlook, but won't have access to the Copilot features in Outlook.

恶意软件包括病毒、间谍软件和其他可能不需要的软件。 Windows Defender 防病毒免费提供且包含在 Windows 中，始终处于打开状态，并且始终致力于保护个人电脑防御恶意软件。 黑客和骗子有时会利用假的反恶意软件诱骗你在计算机上安装病毒或恶意软件。

Step 2: Back up your folders. Windows Backup is an easy, single stop for all of your backup needs. Your free Microsoft account comes with 5 GB of OneDrive cloud storage (and more storage is available if you need it), and backing up your folders syncs the folders you specify to your OneDrive account, making them instantly accessible on all computers that you use with this Microsoft account.

提示: 在 Windows 7 中，你可使用网络时间服务器来同步计算机时钟，以保持计算机时钟处于最新状态。若要实现这一点，请选择屏幕右下角的日期或时间，然后选择“更改日期和时间设置”。依次选择“网络时间”选项卡和“更改设置”，再选择“使用网络时间服务器进行同步”，然后选择“立即 ...