在保护我的Windows 11/10时，毫无疑问我会为此选择Windows Defender。我建议您也应该将其用作主要安全套件，以避免潜在的第三方防病毒错误。当您使用第三方防病毒软件时，它们可能会损坏Windows Defender的条目，删除它们后，您可能会在使用Windows Defender时遇到问题。

今天，我们在打开Windows Defender时遇到了另一个问题。如图所示，错误提示表明Windows Defender服务出现故障。

错误 0x80070422 – 服务无法启动

首先要做的是打开服务管理器^{(Services Manager)}，并检查Windows Defender服务是否设置为自动^(Automatic)和启动^(Started)。如果不是，那么看看你是否可以启动它。或者，您可能会发现Windows Defender服务在服务管理器中显示为灰色。^{(Services Manager.)}  如果您是此问题的受害者，您会发现这可能是由于某些注册表损坏所致。根据此处^(here)提出的建议，可以通过下面描述的选择性步骤来解决此问题。

1.按Windows Key + R组合，在运行^(Run) 对话框中键入 put Regedt32.exe ，然后^{(Regedt32.exe)}按 Enter^(Enter)打开注册表编辑器^{(Registry Editor)}。

2.导航到以下位置：

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDefend

3.首先，完全拥有^{(take full ownership)}WinDefend密钥^(WinDefend)。取得所有权后，在此位置的右窗格中，查找名为Start的^(Start)DWORD。由于您面临这个问题，它的值数据^{(Value data)}必须为4，默认情况下，它的值数据^{(Value data)}应保持为2。价值数据^{(Value data)}的差异导致了这种情况的发生。所以为了修复它，双击相同的DWORD得到这个：

4.在上面的框中，将Value 数据^{(Value data)}从 4 替换为 2^{( from 4 to 2)}。单击确定^(OK)。您现在可以关闭注册表编辑器^{(Registry Editor)}并尝试启用Windows Defender保护。它现在应该可以正常工作了。

希望这可以帮助！

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

When it comes to protecting my Windows 11/10, no doubt I would pick Windows Defender for this purpose. I suggest you too should use it as the primary security suite to avoid potential third-party antivirus errors. When you use third-party antivirus, they possibly corrupt the entries of Windows Defender, and after removing them, you may face issues in using Windows Defender.

Today, we came around with another issue while turning on Windows Defender. As you can see in the image, the error prompt states that the Windows Defender service has malfunctioned.

Error 0x80070422 – The Service Couldn’t Be Started

The first thing to do is open the Services Manager, and check if the Windows Defender service is set to Automatic and Started. If it is not, then see if you can start it. Alternatively, you may find that the Windows Defender service is grayed out in Services Manager.  If you’re a victim of this issue, you’ll find that possibly, its due to some registry corruption. This can be fixed with selective steps described below, as per the suggestions made here.

1. Press Windows Key + R combination, type put Regedt32.exe in Run dialog box and hit Enter to open the Registry Editor.

2. Navigate to the following location:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDefend

3. Firstly, take full ownership of WinDefend key. After taking ownership, in the right pane of this location, look for the DWORD named Start. Since you’re facing the issue, it must be having its Value data as 4 and by default, its Value data should remain 2. Differences in the Value data resulted in this happening. So in order to fix it, double click on the same DWORD to get this:

4. In the above box, replace the Value data from 4 to 2. Click OK. You may close the Registry Editor now and try to enable Windows Defender protection. It should work fine by now.

Hope this helps!

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