通常，我们建议在Windows 10 PC 上安装来自Bitdefender、ESET或 F-Secure 之类的安全套件。它们通常比Windows 安全(Windows Security)中的内置Microsoft Defender 防病毒(Microsoft Defender Antivirus)提供更多功能和更好的防病毒保护。问题是，当您安装第三方Windows防病毒软件时，Microsoft Defender 防病毒软件(Microsoft Defender Antivirus)会被禁用。发生这种情况是因为同时运行两个防病毒软件会导致失败、冲突和性能问题。但是，在较新版本的Windows 10中，您可以保留主Windows 10防病毒，并且仅使用Windows 安全(Windows Security)中心的防病毒软件不时获得第二意见。从安全的角度来看，这是一个很好的接触，并且不会在两个防病毒产品之间造成任何冲突或问题。这是它的工作原理：
注意：(NOTE:)提供的功能在Windows 2020 年 5 月 10 日更新(Windows 10 May 2020 Update)或更新版本中可用。如果您使用的是旧版本的Windows 10，您可能无法访问所有功能。检查您的 Windows 10 版本(Check your Windows 10 build)，并在必要时获取可用的最新 Windows 10 更新(latest Windows 10 update)。此外，为了能够从内置的Windows 10防病毒软件中获得第二意见，您必须连接具有管理(administrative)权限的用户帐户。
步骤 1. 打开Windows 安全(Windows Security)应用
如果您想从Microsoft Defender 防病毒软件(Microsoft Defender Antivirus)获得第二意见，即使您使用的是第三方Windows 10防病毒软件，您也必须先打开Windows 安全(Windows Security)应用程序。有很多方法可以做到这一点，您可以在这里找到它们：在 Windows 10 中启动 Windows 安全性的 10 种方法(10 ways to start Windows Security in Windows 10)。如果您赶时间，请知道最简单、最快的方法之一是单击或点击“开始”菜单中的(Start Menu)Windows 安全(Windows Security)快捷方式。
当您打开Windows 安全(Windows Security)应用程序时，您应该会看到类似于下面的屏幕截图的内容。
步骤 2. 在Windows 安全(Windows Security)中心（Microsoft Defender 防病毒软件(Microsoft Defender Antivirus)）中启用定期扫描
在Windows 安全(Windows Security)应用程序中，单击或点击左侧的“病毒和威胁防护” 。("Virus & threat protection")然后，在窗口中央，单击或点击“Microsoft Defender 防病毒选项”("Microsoft Defender Antivirus options")链接。
这将打开一个名为“Microsoft Defender 防病毒选项”的小部分，("Microsoft Defender Antivirus options,")其中Windows 安全(Windows Security)会告诉您“您可以继续使用当前的提供程序，并让 Microsoft Defender 防病毒软件定期检查威胁。”("You can keep using your current provider, and have Microsoft Defender Antivirus periodically check for threats.")
在这条信息下，有一个开关叫做Periodic scanning：打开它。(On.)
将显示UAC 提示(UAC prompt)，要求您确认是否要允许Windows 安全(Windows Security)中心对您的设备进行更改。按是(Yes)。
从现在开始，内置的Windows 10防病毒软件将定期扫描您的计算机或设备，为您提供有关 PC 安全状态的第二意见。这些扫描不会对您的主要防病毒软件产生负面影响。
另一个很酷的功能是您还可以立即开始手动扫描，而无需等待Microsoft Defender Antivirus决定何时运行扫描：
步骤 3. 使用Microsoft Defender 防病毒软件在您的 Windows 10 PC 上运行防病毒扫描(Microsoft Defender Antivirus)
启用定期扫描功能后，Windows 安全应用程序会发生变化，并在(Windows Security)“病毒和威胁防护”("Virus & threat protection")部分显示更多选项。您将获得一个当前威胁(Current threats)部分和一个快速扫描(Quick scan)按钮。
当您按下快速扫描时，(Quick scan,)内置的Windows 10防病毒软件会快速扫描您的计算机以查找恶意软件和病毒，并简要概述其发现。但是，最好执行全面扫描以获得更有意义的第二意见。为此，在快速扫描(Quick scan)按钮下，单击或点击扫描选项(Scan options)链接。它为您提供扫描选项列表，包括完整扫描或自定义扫描。选择完整扫描(Full scan)，然后按立即扫描(Scan now)。
Microsoft Defender 防病毒(Microsoft Defender Antivirus)现在对恶意软件和病毒执行完整的计算机扫描，并为你提供更有意义的第二意见。
PS 您(Did)是否知道您还可以使用Microsoft Defender 防(Microsoft Defender Antivirus)病毒软件从Windows 10 运行离线扫描和清除讨厌的病毒(run offline scans and clean nasty viruses from Windows 10)？
你喜欢从Microsoft Defender Antivirus获得第二意见吗？
启用定期扫描选项很容易，即使您已经从Microsoft以外的公司安装了良好的防病毒产品，您也应该这样做以提高安全性。您永远不知道您的主要防病毒软件何时会错过威胁，而是由Windows 安全中心的 Microsoft Defender 防病毒软件(Windows Security's Microsoft Defender Antivirus)识别。启用此功能，使用它，让我们知道它对您的效果如何。当您可以选择从Microsoft的Windows 10防病毒软件中获得快速的第二意见时，您是否觉得更安全？在下面发表评论(Comment)，让我们讨论。
Protect your PC with Windows Security alongside a third-party antivirus
In general, we recommend installing security suites on Windows 10 PCs, from thе likeѕ of Bitdefender, ESET, or F-Secure. They uѕυally provide more features and better antivirus protection than the built-in Microsoft Defender Antivirus found in Windows Security. The thing is that, when you install a third-party Windows antivirus, the Microsoft Defender Antivirus gets disabled. This happens because simultaneously running two antiviruses is a recipe for failure, conflicts, and performance issues. However, in newer versions of Windows 10, you can keep your main Windows 10 antivirus on, and only use the antivirus from Windows Security to get a second opinion from time to time. It's a nice touch from a security point of view and doesn't cause any conflicts or issues between the two antivirus products. Here's how this works:
NOTE: The features presented are available in Windows 10 May 2020 Update or newer. If you are using an older version of Windows 10, you might not have access to all the features. Check your Windows 10 build and, if necessary, get the latest Windows 10 update available. Also, to be able to get a second opinion from the built-in Windows 10 antivirus, you must connect with a user account that has administrative permissions.
Step 1. Open the Windows Security app
If you want to get a second opinion from the Microsoft Defender Antivirus, even if you're using a third-party Windows 10 antivirus, you must first open the Windows Security app. There are many ways to do that, and you can find them all here: 10 ways to start Windows Security in Windows 10. If you're in a hurry, know that one of the easiest and fastest methods is by clicking or tapping on the Windows Security shortcut from your Start Menu.
When you open the Windows Security app, you should see something similar to the screenshot below.
Step 2. Enable periodic scanning in Windows Security (Microsoft Defender Antivirus)
In the Windows Security app, click or tap "Virus & threat protection" on the left. Then, in the center of the window, click or tap the "Microsoft Defender Antivirus options" link.
This opens a small section called "Microsoft Defender Antivirus options," where Windows Security tells you that "You can keep using your current provider, and have Microsoft Defender Antivirus periodically check for threats."
Under this piece of information, there's a switch called Periodic scanning: turn it On.
A UAC prompt is shown, asking you to confirm that you want to allow Windows Security to make changes to your device. Press Yes.
From now on, the built-in Windows 10 antivirus will scan your computer or device periodically, to give you a second opinion about the state of security on your PC. These scans don't have a negative impact on your main antivirus.
Another cool feature is that you can also immediately start a manual scan, without having to wait for Microsoft Defender Antivirus to decide when it is time to run a scan:
Step 3. Run an antivirus scan on your Windows 10 PC, with Microsoft Defender Antivirus
After you enable the periodic scanning feature, the Windows Security app changes and displays more options in the "Virus & threat protection" section. You get a Current threats section and a Quick scan button.
When you press Quick scan, the built-in Windows 10 antivirus makes a quick scan of your computer for malware and viruses and gives you a brief overview of its findings. However, it is a better idea to perform a full scan for a more meaningful second opinion. To do that, under the Quick scan button, click or tap the Scan options link. It gives you a list of scanning options, including a full scan or a custom scan. Choose the Full scan and press Scan now.
Microsoft Defender Antivirus now performs a full computer scan for malware and viruses and gives you a more meaningful second opinion.
P.S. Did you know that you can also use Microsoft Defender Antivirus to run offline scans and clean nasty viruses from Windows 10?
Do you like getting a second opinion from Microsoft Defender Antivirus?
Enabling the periodic scanning option is easy and something that you should do for increased security, even if you already have a good antivirus product installed from a company other than Microsoft. You never know when your main antivirus might miss a threat, and it is identified by Windows Security's Microsoft Defender Antivirus instead. Enable this feature, use it, and let us know how well it works for you. Do you feel more secure when you have the option of getting a quick second opinion from Microsoft's Windows 10 antivirus? Comment below and let's discuss.
