修复服务无法启动 Windows Defender 错误 0x80070422：  ^{(Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422: )}Windows Defender是内置于Windows 10中的恶意软件防护软件。现在它被Windows用户广泛使用，因为它可靠，但在某些情况下，用户还安装了 3rd 方防病毒^(Antivirus)软件，例如Norton、Quick Heal等，不推荐使用，因为它们会损坏Windows Defender的文件。完全卸载 3rd 方防病毒软件后，您将无法正确使用Windows Defender，因为它所需的文件已损坏且无法再使用。

“服务无法启动。^{(“The service couldn’t be started. )}
该服务无法启动，要么是因为它被禁用，要么是因为它没有与之关联的启用设备。”^{(The service cannot be started, either because it is disabled or because it has no enabled devices associated with it.”)}

^{(Windows Defender)}当您使用第 3 方防病毒软件时， ^(Antivirus)Windows Defender会关闭，并且在您卸载防病毒^(Antivirus)软件后，您将无法打开 Windows Defender^{(ON Windows Defender)}。如果您尝试启用Windows Defender，您将面临错误“无法启动服务”，错误代码为 0x80070422。因此，不要浪费任何时间，让我们看看如何在下面列出的故障排除指南的帮助下实际修复^(Fix)服务无法启动Windows Defender 错误 0x80070422 。^{(Windows Defender Error 0x80070422)}

修复^(Fix)服务无法启动Windows Defender 错误 0x80070422^{(Windows Defender Error 0x80070422)}

确保 创建一个还原点^{(create a restore point)} 以防万一出现问题。

方法一：运行 SFC 和 CHKDSK^{(Method 1: Run SFC and CHKDSK)}

1.按Windows Key + X然后单击命令提示符（管理员）。^{( Command Prompt (Admin).)}

2.现在在cmd中输入以下内容并回车：

Sfc /scannow
sfc /scannow /offbootdir=c:\ /offwindir=c:\windows (If above fails then try this one)

3.等待上述过程完成，完成后重新启动您的电脑。

4.接下来，从这里运行 CHKDSK  Fix File System Errors with Check Disk Utility(CHKDSK)。

5.让上述过程完成并再次重新启动您的 PC 以保存更改。

方法 2：暂时禁用第 3 方防病毒软件^{(Method 2: Temporarily Disable 3rd party Antivirus)}

1.右键单击系统托盘中的防病毒程序图标^{( Antivirus Program icon)}，然后选择禁用。^(Disable.)

2.接下来，选择防病毒软件将保持禁用的时间范围。^{( Antivirus will remain disabled.)}

注意：选择尽可能少的时间，例如 15 分钟或 30 分钟。

3.完成后，再次尝试运行Windows Defender并检查错误是否解决。

4.按 Windows 键 + X 然后选择控制面板。^{( Control Panel.)}

5.下一步，点击系统和安全。^{( System and Security.)}

6.然后点击Windows防火墙。^{(Windows Firewall.)}

7.现在从左侧窗格中单击打开或关闭Windows 防火墙^{(Turn Windows Firewall)}。

8.选择关闭 Windows 防火墙并重新启动您的 PC。^{(Select Turn off Windows Firewall and restart your PC. )}再次尝试打开Windows Defender并查看您是否能够修复服务无法启动 Windows Defender 错误 0x80070422。^{(Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.)}

如果上述方法不起作用，请确保按照完全相同的步骤再次打开防火墙。

方法 3：确保 Windows 是最新的^{(Method 3: Make sure Windows is up to date)}

1.按Windows Key + I 然后选择 更新和安全。^{(Update & Security.)}

2.下一步，再次单击 检查更新^{(Check for updates)} 并确保安装任何待处理的更新。

3.安装更新后重新启动您的电脑，看看您是否能够 修复服务无法启动 Windows Defender 错误 0x80070422。^{(Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.)}

方法 4：确保 Windows Defender 服务设置为自动^{(Method 4: Make sure Windows Defender service is set to Automatic)}

注意：^(Note:)如果Windows Defender服务在服务管理器^{(Services Manager)}中显示为灰色，请按照此帖子^{(follow this post)}操作。

1.按 Windows 键 + R 然后键入services.msc并按 Enter。

2.在服务^(Services)窗口中找到以下服务：

Windows Defender 防病毒网络检查服务^{(Windows Defender Antivirus Network Inspection Service)}
Windows Defender 防病毒服务^{(Windows Defender Antivirus Service)}
Windows Defender 安全中心服务^{(Windows Defender Security Center Service)}

3. 双击它们并确保它们的启动^(Startup)类型设置为自动^{( Automatic)}，如果服务尚未运行，请单击启动。^(Start)

4.单击应用，然后单击确定。

5.重新启动您的 PC 以保存更改并查看您是否能够 修复服务无法启动 Windows Defender 错误 0x80070422。^{(Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.)}

方法 5：通过注册表编辑器启用 Windows Defender^{(Method 5: Enable Windows Defender through Registry Editor)}

1.按 Windows 键 + R 然后键入regedit并按 Enter。

2.导航到以下注册表项：

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDefend

3.现在右键单击WinDefend并选择权限。^{(Permissions.)}

4.遵循本指南^{(this guide)}以完全控制或拥有上述注册表项。

5.之后确保您选择了WinDefend^(WinDefend)，然后在右侧窗口中双击Start DWORD。

6. 将值数据字段中的值更改为2，然后单击确定。

7.关闭注册表编辑器^{(Registry Editor)}并重新启动您的 PC。

8.再次尝试启用 Windows Defender^{(enable Windows Defender)}，这一次它应该可以工作。

方法 6：运行 CCleaner 和 Malwarebytes^{(Method 6: Run CCleaner and Malwarebytes)}

1.下载并安装 CCleaner  &  Malwarebytes。

2.运行 Malwarebytes^{(Run Malwarebytes)(Run Malwarebytes)} 并让它扫描您的系统以查找有害文件。

3.如果发现恶意软件，它将自动删除它们。

4.现在运行 CCleaner  ，在“Cleaner”部分的“ Windows ”选项卡下，我们建议检查以下要清理的选项：

5.一旦您确定检查了正确的点，只需单击 Run Cleaner， 然后让 CCleaner 运行。

6.要清理您的系统，请进一步选择注册表^(Registry)选项卡并确保选中以下内容：

7.选择Scan for Issue并允许CCleaner扫描，然后单击 Fix Selected Issues。

8.当CCleaner 询问“您要备份对注册表的更改吗？^{(Do you want backup changes to the registry?)}” 选择是。

9.备份完成后，选择Fix All Selected Issues。

10.重新启动您的 PC 以保存更改并查看您是否能够 修复服务无法启动 Windows Defender 错误 0x80070422。^{(Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.)}

方法 7：刷新或重置您的 PC^{(Method 7: Refresh or Reset your PC)}

1.按Windows Key + I 打开设置^(Settings)，然后选择更新和安全。^{(Update & Security.)}

2.从左侧菜单中选择Recovery，然后单击Reset this PC 下的“ Get started ”。

3.选择 保留我的文件^{(Keep my files)}的选项。

4.按照屏幕上的说明完成该过程。

5.这将需要一些时间，您的计算机将重新启动。

方法8：修复安装Windows 10^{(Method 8: Repair Install Windows 10)}

这种方法是最后的手段，因为如果没有任何效果，那么这种方法肯定会修复您 PC 的所有问题。修复^{(Repair Install)}仅使用就地升级来修复系统问题而不删除系统上存在的用户数据进行安装。因此，请按照本文查看如何轻松修复安装 Windows 10。^{(How to Repair Install Windows 10 Easily.)}

为你推荐：^{(Recommended for you:)}

• 从 Microsoft Edge 移除 Fake Virus 警告
• 修复系统还原错误 0x800700B7^{(Fix System Restore Error 0x800700B7)}
• 如何完全控制或拥有 Windows 注册表项^{(How to Take Full Control or Ownership of Windows Registry Keys)}
• 修复快捷方式图标更改为 Internet Explorer 图标^{(Fix Shortcut icons changed to Internet Explorer icon)}

就是这样，您已成功修复服务无法启动 Windows Defender 错误 0x80070422^{(Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422)}但如果您对本指南仍有任何疑问，请随时在评论部分提出。

Fix The Service Couldn't Be Started Windows Defender Error 0x80070422

Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422: Windows Defender is a malware protection software which is inbuilt into Windows 10. Now it is used widely by Windows users because it’s reliable, but in some cases, users also installed 3rd party Antivirus software such as Norton, Quick Heal etc which is not recommend because they corrupt the files of Windows Defender. Once you completely uninstall 3rd party antivirus you won’t be able to use Windows Defender properly because files required by it have already been corrupted and can no longer be used.

“The service couldn’t be started.
The service cannot be started, either because it is disabled or because it has no enabled devices associated with it.”

Windows Defender is turned off when you use a 3rd party Antivirus and once you uninstall the Antivirus software you won’t be able to turn ON Windows Defender. If you try to enable Windows Defender you will face the error “The Service Couldn’t Be Started” with error code 0x80070422. So without wasting any time let’s see how to actually Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422 with the help of below-listed troubleshooting guide.

Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422

Make sure to create a restore point just in case something goes wrong.

Method 1: Run SFC and CHKDSK

1.Press Windows Key + X then click on Command Prompt (Admin).

2.Now type the following in the cmd and hit enter:

Sfc /scannow
sfc /scannow /offbootdir=c:\ /offwindir=c:\windows (If above fails then try this one)

3.Wait for the above process to finish and once done restart your PC.

4.Next, run CHKDSK from here Fix File System Errors with Check Disk Utility(CHKDSK).

5.Let the above process complete and again reboot your PC to save changes.

Method 2: Temporarily Disable 3rd party Antivirus

1.Right-click on the Antivirus Program icon from the system tray and select Disable.

2.Next, select the time frame for which the Antivirus will remain disabled.

Note: Choose the smallest amount of time possible for example 15 minutes or 30 minutes.

3.Once done, again try to run Windows Defender and check if the error resolves or not.

4.Press Windows Key + X then select Control Panel.

5.Next, click on System and Security.

6.Then click on Windows Firewall.

7.Now from the left window pane click on Turn Windows Firewall on or off.

8.Select Turn off Windows Firewall and restart your PC. Again try to open Windows Defender and see if you’re able to Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.

If the above method doesn’t work make sure to follow the exact same steps to turn on your Firewall again.

Method 3: Make sure Windows is up to date

1.Press Windows Key + I then select Update & Security.

2.Next, again click Check for updates and make sure to install any pending updates.

3.After the updates are installed reboot your PC and see if you’re able to Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.

Method 4: Make sure Windows Defender service is set to Automatic

Note: If Windows Defender service is grayed out in Services Manager then follow this post.

1.Press Windows Key + R then type services.msc and hit Enter.

2.Find the following services in the Services window:

Windows Defender Antivirus Network Inspection Service
Windows Defender Antivirus Service
Windows Defender Security Center Service

3.Double-click on each of them and make sure their Startup type is set to Automatic and click Start if the services are not already running.

4.Click Apply followed by OK.

5.Reboot your PC to save changes and see if you’re able to Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.

Method 5: Enable Windows Defender through Registry Editor

1.Press Windows Key + R then type regedit and hit Enter.

2.Navigate to the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDefend

3.Now right-click on WinDefend and select Permissions.

4.Follow this guide in order to take full control or ownership of the above registry key.

5.After that make sure you have selected WinDefend then in the right window double-click on Start DWORD.

6.Change the value to 2 in the value data field and click OK.

7.Close Registry Editor and reboot your PC.

8.Again try to enable Windows Defender and this time it should work.

Method 6: Run CCleaner and Malwarebytes

1.Download and install CCleaner & Malwarebytes.

2.Run Malwarebytes and let it scan your system for harmful files.

3.If malware is found it will automatically remove them.

4.Now run CCleaner and in the “Cleaner” section, under the Windows tab, we suggest checking the following selections to be cleaned:

5.Once you’ve made certain the proper points are checked, simply click Run Cleaner, and let CCleaner run its course.

6.To clean your system further select the Registry tab and ensure the following are checked:

7.Select Scan for Issue and allow CCleaner to scan, then click Fix Selected Issues.

8.When CCleaner asks “Do you want backup changes to the registry?” select Yes.

9.Once your backup has completed, select Fix All Selected Issues.

10.Restart your PC to save changes and see if you’re able to Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422.

Method 7: Refresh or Reset your PC

1.Press Windows Key + I to open Settings then select Update & Security.

2.From left-hand menu select Recovery and click on “Get started” under Reset this PC.

3.Select the option to Keep my files.

4.Follow the instructions on the screen to complete the process.

5.This will take some time and your computer will restart.

Method 8: Repair Install Windows 10

This method is the last resort because if nothing works out then this method will surely repair all problems with your PC. Repair Install just using an in-place upgrade to repair issues with the system without deleting user data present on the system. So follow this article to see How to Repair Install Windows 10 Easily.

Recommended for you:

• Remove Fake Virus Warning from Microsoft Edge
• Fix System Restore Error 0x800700B7
• How to Take Full Control or Ownership of Windows Registry Keys
• Fix Shortcut icons changed to Internet Explorer icon

That’s it, you have successfully Fix The Service Couldn’t Be Started Windows Defender Error 0x80070422 but if you still have any questions regarding this guide then feel free to ask them in the comment’s section.

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