如果您使用的是Windows 11/10/8/7，并且您最近在启动Windows Defender时收到错误-此程序的服务已停止^{(This program’s service has stopped)}，那么您需要尽快解决此问题，因为您的 PC 现在处于易受攻击状态。如果Windows Defender^{(Windows Defender)}停止平稳运行，也会出现此特定错误消息。完整的信息是——

Windows Defender: This program’s service has stopped. You can start the service manually or restart your computer, which will start the service. (Error Code: 0x800106ba)

如果您使用的是旧版本的Windows，您可能会看到另一种措辞，但问题是一样的——

This program is turned off. If you are using another program that checks for harmful or unwanted software, use the Action Center to check that program’s status.

可能会为您提供打开它的选项。但是，在大多数情况下，即使在手动打开Windows Defender或重新启动计算机后，问题仍然存在。^{(Windows Defender)}

该程序的服务已停止

您可以尝试这些故障排除建议，看看它们是否可以帮助您解决此Microsoft Defender 错误^{(Microsoft Defender error)}-

1]禁用第三方反恶意软件

此问题主要发生在您在计算机上安装另一个反恶意软件时。尽管Windows Defender在收到其他反恶意软件的信号后会自行停止，但有时，由于某些内部错误，可能会出现此问题。在这种情况下，您应该禁用其他第三方应用程序并检查问题是否仍然存在。如果问题通过这样做得到解决，您可能需要重新安装第三方反恶意软件。

2]打开Windows Defender服务

根据错误消息，Windows Defender服务已停止。因此，您需要使用Windows 服务管理器^{(Windows Services Manager)}将其打开。为此，请在任务栏^(Taskbar)搜索框中键入“services.msc”，然后按 Enter^(Enter)将其打开。

现在找出以下这些服务的状态-

• Windows Defender 高级威胁防护服务^{(Defender Advanced Threat Protection Service)}
• Windows Defender 防病毒网络检查服务^{(Defender Antivirus Network Inspection Service)}
• Windows Defender 防病毒服务
• Windows Defender 安全中心服务^{(Defender Security Center Service)}

所有这些的启动^(Startup)类型都应该设置为自动 -^{(Automatic –)}并且应该启动服务，^(Services)

如果不是这样，您需要打开该服务^(Service)。为此，请双击相应的服务，然后选择“自动”作为启动^(Startup)类型。接下来单击“服务^(Service)状态”标签下的“开始”按钮。最后，单击应用^(Apply)。

3]重新注册Windows Defender DLL文件

有时，重新注册相关的 DLL 文件可以帮助解决此问题。要开始使用，请以管理员权限打开命令提示符^{(Command Prompt)}，然后一一运行以下命令：

regsvr32  atl.dll

regsvr32  wuapi.dll

regsvr32  softpub.dll

regsvr32  mssip32.dll

之后，打开Windows Defender并检查问题是否仍然存在。

4]验证组策略编辑器^{(Verify Group Policy Editor)}设置

检查您是否使用组策略编辑器^{(Group Policy Editor)}错误地关闭了Windows Defender。某些恶意软件也可以更改此安全功能。要验证这一点，请在Start search中键入 gpedit.msc 并按Enter打开Local Group Policy Editor。接下来^(Next)，导航到此路径-

Computer Configuration > Administrator Templates > Windows Components > Windows Defender Antivirus

在右侧，您应该找到一个名为Turn off Windows Defender Antivirus的选项。双击它并检查它是否设置为“未配置”。如果将其设置为“已启用^(Enabled)”，则需要将其更改为“未配置^{(Not Configured)}” 。

5]验证注册表编辑器设置

如果任何恶意软件对特定注册表^(Registry)项进行了更改，您需要更改或完全删除它以解决此问题。打开注册表编辑器^{(Registry Editor)}并前往此位置 -

HKey_Local_Machine\Software\Policies\Microsoft\Windows Defender

在右侧，如果您找到任何名为DisableAntiSpyware的键。您可以删除它或将其值设置为0（零）。

希望这里的东西可以帮助你。^{(Hope something here help you.)}

如果Windows Defender 完全关闭，^{(Windows Defender is turned off completely)}请参阅此帖子。

This program’s service has stopped, 0x800106ba, in Windows Defender

If you are using Windows 11/10/8/7 and you have recently received an error while starting Windows Defender – This program’s service has stopped, then you need to solve this problem as soon as possible since your PC is now in vulnerable state. This particular error message can also occur if Windows Defender stops running smoothly. The full message is-

Windows Defender: This program’s service has stopped. You can start the service manually or restart your computer, which will start the service. (Error Code: 0x800106ba)

If you are using an older version of Windows, you may see another wording, but the problem is the same–

This program is turned off. If you are using another program that checks for harmful or unwanted software, use the Action Center to check that program’s status.

You may be offered an option to turn it ON. However, in most cases, the issue persists even after turning on Windows Defender manually or restarting the computer.

This program’s service has stopped

You may try these troubleshooting suggestions and see if any of them help you this Microsoft Defender error–

1] Disable third-party anti-malware

This problem mainly occurs when you install another anti-malware software on your computer. Although Windows Defender stops itself after getting a signal from the other anti-malware, sometimes, this problem can occur due to some internal error. In this case, you should disable the other third-party app and check whether the problem persists or not. If the problem gets solved by doing that, you may need to reinstall the third-party anti-malware software.

2] Turn on Windows Defender service

According to the error message, the Windows Defender service has been stopped. So you need to turn it on using Windows Services Manager. To do so, type “services.msc” in the Taskbar search box and hit Enter to open it.

Now find out the status of these following services-

• Windows Defender Advanced Threat Protection Service
• Windows Defender Antivirus Network Inspection Service
• Windows Defender Antivirus Service
• Windows Defender Security Center Service

The Startup type for all these should be set Automatic – and the Services should be started,

If it is otherwise, you need to turn that Service on. To do that, double-click on the respective service, and select “Automatic” as Startup type. Next click on the “Start” button under “Service status” label. Finally, click on Apply.

3] Re-register Windows Defender DLL files

Sometimes, re-registering the concerned DLL files can help solve this issue. To get started, open Command Prompt with administrator privilege, and run these following commands one by one:.

regsvr32  atl.dll

regsvr32  wuapi.dll

regsvr32  softpub.dll

regsvr32  mssip32.dll

After this, open Windows Defender and check whether the problem still exists or not.

4] Verify Group Policy Editor settings

Check if you have mistakenly turned off Windows Defender using Group Policy Editor. Some malware can change this security feature as well. To verify that, type gpedit.msc in Start search and hit Enter to open the Local Group Policy Editor. Next, navigate to this path-

Computer Configuration > Administrator Templates > Windows Components > Windows Defender Antivirus

On the right-hand side, you should find an option called Turn off Windows Defender Antivirus. Double-click on it and check if it is set to “Not Configured” or not. If this is set to “Enabled,” you need to change it to Not Configured.

5] Verify Registry Editor setting

If any malware has made a change to a particular Registry key, you need to either change or delete it completely to fix this problem. Open Registry Editor and head over to this location-

HKey_Local_Machine\Software\Policies\Microsoft\Windows Defender

On the right-hand side, if you find any key called DisableAntiSpyware. You may either delete it or set its value to 0 (zero).

Hope something here help you.

See this post if Windows Defender is turned off completely.

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