无法禁用Windows Defender？如果即使您安装了 3rd party Antivirus或Internet Security Suite ， Windows Defender也没有关闭，那么这篇文章可能会对您有所帮助。

如果您安装了其他防病毒软件，则Windows将关闭Windows Defender。但是，如果Windows Defender继续与您的安全软件一起运行呢？我们已经介绍了如何手动禁用 Windows Defender。现在让我们看看如果您发现Windows Defender无法关闭，您可以做些什么。

我在我的电脑上注意到了这个问题。我确实重新启动了我的Windows 10 PC 以查看这是否异常。但是没有，Defender图标又回来了，就在我的防病毒软件旁边。

Windows Defender 不会关闭

1]检查控制面板

您要做的第一件事是打开Control Panel > Security。在这里您可能会看到一些消息。我的Windows告诉我我的防火墙^(Firewall)没有激活。但确实如此，我已经检查过了。我的安全套件功能齐全。

我单击查看^(View)防火墙选项并选择打开 Kaspersky Internet Suite^{(Turn on Kaspersky Internet Suite)}。它没有帮助。

2]  Disable/Enable Real-time保护

接下来我打开Settings > Update & Security > Windows Defender。我看到实时保护^{(Real-time protection)}已打开。我将滑块移到关闭^(Off)位置，但没有帮助。Windows Defender图标不会消失。

重新启动时，我回到了第一方。

虽然我没有尝试以下这些步骤，但您可以。^{(While I did not try these following steps, you could.)}

3]检查干净启动状态

进入干净启动状态^{(Clean Boot State)}，看看问题是否仍然存在。如果没有，则意味着某些软件正在导致这种情况发生。尝试隔离它，然后卸载罪犯。

4]运行SFC和DISM

也许您的 Windows Defender 文件已损坏。运行系统文件检查器和DISM，看看它是否有帮助。

5]检查组策略设置

如果有一些有效的组策略^{(Group Policy)}，那么也可能发生这种情况。这是您必须自己检查的事情。

仅供参考，组策略^{(Group Policy)}相关的注册表项位于：

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft

HKEY_CURRENT_USER\Software\Policies\Microsoft

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies

就在那时，我记得我已经调整了Windows Defender 以提供针对 PUP 的保护^{(Windows Defender to offer protection against PUPs)}。我扭转了调整并重新启动了我的Windows计算机。砰^(Bang)！Windows Defender图标消失了。

现在阅读^{(Now Read)}：如何在 Windows 10 中删除 Windows Defender 图标^{(How to remove Windows Defender icon in Windows 10)}。

如果出现以下情况，请参阅这些帖子：^{(See these posts if:)}

1. Windows 安全中心服务未启动^{(Windows Security Center service does not start)}
2. Windows 将旧的安全软件识别为已安装
3. Windows 未检测到已安装的防火墙/防病毒软件
4. Windows Defender 已关闭或无法正常工作。^{(Windows Defender is turned off or not working.)}

Windows Defender will not turn off; Unable to disable Windows Defender

Unable to disable Windows Defender? If Wіndows Defender does not turn off even when you have installed 3rd party Antivirus or an Internet Security Suite, then this post may help you.

If you have another antivirus software installed, then Windows will turn off Windows Defender. But what if Windows Defender continues to run along with your security software? We have already covered how to manually disable Windows Defender. Now let us see what you can do if you find that Windows Defender just will not turn off.

I noticed this issue on my computer. I did restart my Windows 10 PC to see if this was an aberration. But no, the Defender icon was back, sitting right next to my antivirus software.

Windows Defender will not turn off

1] Check Control Panel

The first thing you want to do is open Control Panel > Security. Here you may see some message. My Windows was telling me that my Firewall was not active. But it was, I had checked it up. My security suite was fully functional.

I clicked on View firewall options and opted to Turn on Kaspersky Internet Suite. It did not help.

2]  Disable/Enable Real-time protection

Next I opened Settings > Update & Security > Windows Defender. I saw that the Real-time protection was turned On. I moved the slider to the Off position, but it did not help. The Windows Defender icon would not go away.

On restart, I was back to square one.

While I did not try these following steps, you could.

3] Check in Clean Boot State

Enter Clean Boot State and see if the problem persists. If it does not, then it means that some software is causing this to happen. Try to isolate it and then uninstall the offender.

4] Run SFC and DISM

Maybe your Windows Defender files have been corrupted. Run System File Checker and DISM and see if it helps.

5] Check Group Policy settings

If there is some Group Policy in force, then too, this can happen. This is something you will have to check for yourself.

Just for your information, the Group Policy related registry keys are located at:

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft

HKEY_CURRENT_USER\Software\Policies\Microsoft

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies

It was then that I remembered that I had tweaked Windows Defender to offer protection against PUPs too. I reversed the tweak and restarted my Windows computer. Bang! The Windows Defender icon had disappeared.

Now Read: How to remove Windows Defender icon in Windows 10.

See these posts if:

1. Windows Security Center service does not start
2. Windows identifies old security software as installed
3. Windows does not detect installed Firewall / Antivirus
4. Windows Defender is turned off or not working.

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