如果您在 Windows 11 或 Windows 10 设备上遇到问题，您可能需要查看事件查看器以更好地了解问题所在以及可能导致问题的原因。在此过程中，您可能会看到记录了一个带有错误消息Windows 无法加载注册表(Windows was unable to load the registry)的事件。在这篇文章中，我们将为这个问题提供最合适的解决方案。
以下是完整的错误信息；
Windows was unable to load the registry. This problem is often caused by insufficient memory or insufficient security rights.
DETAIL – The process cannot access the file because it is being used by another process, for C:\Users\<username>\ntuser.dat
大多数受影响的用户没有报告与此问题相关的任何症状（除了此重复出现的错误消息）。
此错误最可能的罪魁祸首包括：
- 登录/注销过程中电源中断。
- (Bad)安装或卸载了错误的应用程序。
- 网络中断或病毒/间谍软件。
- 损坏的 UsrClass.dat 配置文件。
- 损坏的 Windows 配置文件。
Windows无法加载注册表
如果您遇到此问题，您可以尝试以下我们推荐的解决方案（不分先后顺序），看看是否有助于解决问题。但在开始之前，请重新启动系统一次，以管理员身份登录，看看这是否会使问题消失——因为错误消息确实提到它可能是内存或权限问题。
- 从注册表中检查(Check)并删除病毒（如果有）
- 运行 SFC 扫描
- 删除 UsrClass.dat 文件
- 创建新的用户配置文件
- 修复 Windows 注册表
- 执行系统还原
- 执行重置(Reset)此 PC、云重置(Cloud Reset)或就地升级修复(In-place Upgrade Repair)Windows 10
让我们看一下关于列出的每个解决方案所涉及的过程的描述。
1]从注册表中检查(Check)并删除病毒（如果有）
如果注册表中存在恶意软件/病毒，您可能会遇到此Windows 无法加载注册表(Windows was unable to load the registry)错误。在这种情况下，尝试的解决方案是检查注册表是否(check the registry for infections and remove) 存在感染并删除任何感染。
相关(Related)：无法导入注册表文件，并非所有数据都已成功写入注册表(Cannot import Registry File, Not all Data was successfully written to the Registry)。
2]运行SFC扫描
系统(System)文件损坏可能是您遇到错误的原因。
SFC/DISM是Windows中的 实用程序，允许用户扫描Windows系统文件中的损坏并恢复损坏的文件。因此，您可以运行 SFC 扫描，看看是否有帮助。如果没有，请运行 DISM 工具(run the DISM tool)来修复系统映像。
3]删除UsrClass.dat文件
在某些情况下，错误的症状是Windows Search not working或Start menu not opening。在这些情况下，您可以通过从AppData文件夹中删除UsrClass.dat文件来解决此问题。就是这样：
- 按Windows key + E打开文件资源管理器(open File Explorer)。
- 在文件资源管理器中，显示隐藏的文件和文件夹。
- 现在，导航到下面的目录路径 - 将<UserName>占位符替换为当前登录的用户帐户名。
C:\Users\<UserName>\AppData\Local\Microsoft\Windows
- 在该位置，向下滚动项目列表并找到 UsrClass.dat，右键单击该文件并 从上下文菜单中选择删除。(Delete)
- 重启电脑。
在启动时，检查问题是否已解决。如果没有，请尝试下一个解决方案。
4]创建一个新的用户配置文件
如果您的用户配置文件已损坏(user profile is corrupted)，您可能会遇到此问题。在大多数情况下，您可以通过为您的 Windows 10 计算机创建新的用户配置文件/帐户来解决该问题。
完成此过程后，与当前用户配置文件关联的任何损坏的依赖项都将替换为正常的副本。
相关(Related)：由于系统注册表文件丢失或损坏，Windows 无法加载(Windows failed to load because the system registry file is missing or corrupt)。
5]修复Windows注册表
无效/损坏的注册表项也可能触发此错误。在这种情况下，您可以修复注册表(repair the registry)，看看这是否有助于解决手头的问题。
6]执行系统还原
如果您的系统发生了一些您可能不知道的更改（操作系统方面由于更新或软件安装），您可能会遇到此错误。在这种情况下，您可以 将系统恢复到 系统正常工作的较早点。
7]执行重置(Perform Reset)此PC，云重置(Cloud Reset)或就地升级修复(In-place Upgrade Repair)Windows 11/10
此时，如果问题(issue )仍未解决，则很可能是由于某种常规无法解决的系统损坏。在这种情况下，这里适用的解决方案是您可以尝试重置此电脑(Reset This PC)或云重置(Cloud Reset)来重置每个 Windows 组件。
您也可以尝试就地升级修复，在极端情况下，clean install Windows 11/10。
这些解决方案中的任何一个都应该适合您！
Fix Windows was unable to load the registry error
If you encounter issueѕ on your Windows 11 or Windows 10 device, you may want to look in Event Viewеr to get a better understanding of what the issue is and what might have caused it. On the course of that, you might see an event logged with thе error message Windows was unable to load the registry. In this post, we will offer the most suitable solutions to this issue.
The following is the full error message;
Windows was unable to load the registry. This problem is often caused by insufficient memory or insufficient security rights.
DETAIL – The process cannot access the file because it is being used by another process, for C:\Users\<username>\ntuser.dat
Most affected users didn’t report any associated symptoms with this issue (other than this recurring error message).
The most likely culprits to this error include;
- Power interrupted during the logon/logoff procedure.
- Bad application installed or uninstalled.
- Network dropout or virus /spyware.
- Corrupted UsrClass.dat profile.
- Corrupted Windows profile.
Windows was unable to load the registry
If you’re faced with this issue, you can try our recommended solutions below in no particular order and see if that helps to resolve the issue. But before you begin, restart your system once, log in as administrator and see if this makes the problem go away – as the error message does mention that it could be a memory or permissions issue.
- Check and remove virus (if any) from Registry
- Run SFC scan
- Delete UsrClass.dat file
- Create new User Profile
- Repair Windows Registry
- Perform System Restore
- Perform Reset This PC, Cloud Reset or In-place Upgrade Repair Windows 10
Let’s take a look at the description of the process involved concerning each of the listed solutions.
1] Check and remove virus (if any) from Registry
If there’s malware/virus present in the registry, you may encounter this Windows was unable to load the registry error. In this case, the solution to try is, check the registry for infections and remove any if found.
Related: Cannot import Registry File, Not all Data was successfully written to the Registry.
2] Run SFC scan
System file corruption could be the reason you encounter the error.
The SFC/DISM is a utility in Windows that allows users to scan for corruption in Windows system files and restore corrupted files. So, you can run the SFC scan and see if that helps. If it doesn’t, run the DISM tool to repair the system image.
3] Delete UsrClass.dat file
In some cases, the symptoms of the error are Windows Search not working or the Start menu not opening. In these cases, you can resolve the issue by deleting the UsrClass.dat file from the AppData folder. Here’s how:
- Press Windows key + E to open File Explorer.
- In File Explorer, show hidden files and folders.
- Now, navigate to the directory path below – replace the <UserName> placeholder with the currently logged-on user account name.
C:\Users\<UserName>\AppData\Local\Microsoft\Windows
- At the location, scroll down through the list of items and locate UsrClass.dat, right-click the file and choose Delete from the context menu.
- Restart PC.
On boot, check if the issue is resolved. If not, try the next solution.
4] Create a new User Profile
You’re likely to encounter the issue if your user profile is corrupted. In most cases, you’ll be able to resolve the issue by creating a new user profile/account for your Windows 10 computer.
Upon completing this procedure, any corrupted dependencies associated with the current user profile will be replaced with healthy copies.
Related: Windows failed to load because the system registry file is missing or corrupt.
5] Repair Windows Registry
Invalid/corrupted registry entries can also trigger this error. In this case, you can repair the registry and see if that helps with the issue at hand.
6] Perform System Restore
If your system has undergone some changes (OS-wise due to updates or software installation) which you might not be aware of, you might encounter this error. In this case, you can restore your system to an earlier point when the system was working correctly.
7] Perform Reset This PC, Cloud Reset or In-place Upgrade Repair Windows 11/10
At this point, if the issue is still unresolved, it’s most likely due to some kind of system corruption that cannot be resolved conventionally. In this case, the applicable solution here is that you can try Reset This PC, or Cloud Reset to reset every Windows component.
You may also try In-place Upgrade Repair and in extreme cases, clean install Windows 11/10.
Any of these solutions should work for you!
