Windows 11/10升级 时遇到错误，提示STOP 0XC000021A 或 STATUS_SYSTEM_PROCESS_TERMINATED， (STOP 0XC000021A or STATUS_SYSTEM_PROCESS_TERMINATED, )那么这是Windows中的安全问题。也可能是系统文件有问题，并且被错误地修改了。这并不一定意味着存在恶意软件问题，但最近安装的应用程序之一可能已修改或损坏了某些核心文件。本指南将帮助您解决此问题。
0XC000021a，状态系统进程已终止(STATUS SYSTEM PROCESS TERMINATED)
当Windows在(Windows)WinLogon或CSRSS（客户端服务器运行时子系统(Server Run-Time Subsystem)）等用户模式子系统中检测到安全威胁时，您会收到c000021a（致命系统错误(System Error)）错误。当这样的系统进程终止时，您的系统将切换到内核模式。因为没有CSRSS(CSRSS)或WinLogon就无法运行。
c000021a 错误的另一个原因是硬盘驱动器中的文件不匹配。从备份恢复系统文件或安装或更新设备驱动程序(updating device drivers)、服务或第三方软件后，您会收到此错误。在这种情况下，还原程序会跳过关键的系统文件，主要是因为程序确定它们正在被系统使用。
This error occurs when a user-mode subsystem, such as WinLogon or the Client Server Run-Time Subsystem (CSRSS), has been fatally compromised and security can no longer be guaranteed. In response, the operating system switches to kernel mode. Microsoft Windows cannot run without WinLogon or CSRSS. Therefore, this is one of the few cases where the failure of a user-mode service can shut down the system.
c000021A Windows 11/10上的致命系统错误(Fatal System Error)
您可能会从各种因素中获得致命系统错误。(Fatal System Error)在本节中，我们将解决所有问题的故障排除方法。某些修复仅在您可以访问Windows环境时有效，而某些修复在BSoD(BSoDs)上有效。以下是首选的解决方案：
- 卸载有问题的软件。
- 运行系统文件检查器
- 使用 DISM 命令修复它
- 重建 BCD 并修复 MBR
- 修复硬盘错误
- 执行系统还原。
- 使用云重置选项。
- 联系微软。
如果您无法正常启动到桌面，您可能必须访问高级启动选项(access Advanced Startup Options)才能访问恢复工具。
1]卸载有问题的软件
你还记得你第一次遇到 0xc000021a 错误是什么时候吗？它可能是在您安装或更新应用程序、系统服务或驱动程序之后立即发生的。
您安装或更新的最后一个软件可能是罪魁祸首。如果您遇到这种情况，您可以通过卸载或禁用有问题的软件来解决问题。同时按下 Windows 键和 R(Windows key and R)以打开“运行”(Run)对话框。
在“运行”(Run)对话框中键入appwiz.cpl ，然后单击“确定”。(appwiz.cpl)您可以单击“安装(Installed On)日期”列，从应用程序列表中按安装日期对应用程序进行排序。这可以帮助您找到可能导致错误的最新安装。
右键单击(Right-click)应用程序并选择 卸载(Uninstall)。按照屏幕上的说明完成卸载。
如果您最近安装或更新了任何驱动程序(Driver)软件，您可能需要考虑将其删除。
但是，如果损坏已经造成，卸载将无济于事。在这种情况下，您应该执行系统还原以恢复 PC 的稳定状态。
2]运行系统文件检查器
在安全模式下运行系统文件检查器，看看是否有帮助。这将修复损坏或损坏的 Windows 文件。您将需要从提升的CMD运行此命令，即以管理员权限启动的命令提示符。
3]运行DISM
如果您通过之前的解决方案获得了对系统的访问权限，但无法修复 c000021a 错误，您可以在Command Prompt中运行(Command Prompt)DISM命令。
首先，使用命令提示符将您的计算机启动到Windows 安全模式(Windows Safe Mode with Command Prompt)。在命令提示符(Command Prompt)窗口中，输入以下命令并按 ENTER 键运行它：
dism /image:C:\/cleanup-image/revertpendingactions
4]重建BCD并修复MBR
引导配置数据 ( BCD ) 是一个独立于固件的数据库，用于引导时配置数据。要 在Windows中(Windows)重建 BCD(rebuild the BCD)或引导配置数据(Boot Configuration Data)文件，请键入以下命令并按Enter。您将需要使用管理员提升的命令提示符。
bootrec /rebuildbcd
要获取新的引导加载程序，请在提升的命令提示符下键入以下命令。
bcdboot c:\windows /s c:
C 是安装Windows的系统驱动器。如果这不起作用，您可以尝试修复主引导记录(repairing the Master Boot Record)。
5]修复硬盘错误
这可能不是 100% 完全证明的解决方案，但您可以在命令提示符下运行 chkdsk(run chkdsk in the command prompt )以查看您的硬盘驱动器没有任何问题。您可以执行以下命令：
chkdsk c: /f /r
在磁盘的损坏部分上安装程序时可能会导致问题。
相关(Related)： 错误 0xc000021a 或 0xc0000001，您的 PC 无法正常启动。
6]运行系统还原
您可以求助于执行系统还原。看看是否有帮助。
如果您收到停止错误 0xc000021a(Stop Error 0xc000021a)，并且系统还原在(System Restore)Windows 10 更新(Update)后停止工作，则它是Windows 10的一个已知问题。这篇文章可能会对您有所帮助 - Windows 10 更新后系统还原不起作用。
7]执行云重置
如果系统还原无法修复它，您的最后一个选择是进行Cloud Reset(do a Cloud Reset)。
8]联系微软
如果似乎没有任何效果，您可以随时通过此链接联系 Microsoft 支持(Microsoft Support) 团队。
提示：(TIP)修复 Windows 蓝屏错误(fix Windows Blue Screen errors)的更多想法。
祝一切顺利。
Fix c000021A Fatal System Error on Windows 11/10
If you are getting an error while Windows 11/10 upgrade which says STOP 0XC000021A or STATUS_SYSTEM_PROCESS_TERMINATED, then it’s a security issue within the Windows. It is also possible that the system files have an issue, and they have been incorrectly modified. This does not necessarily mean that there is a malware problem, but one of the recently installed applications might have modified or corrupted some core files. This guide will help you troubleshoot this problem.
0XC000021a, STATUS SYSTEM PROCESS TERMINATED
You get the c000021a (Fatal System Error) error when Windows detects security compromise in a user-mode subsystem, such as WinLogon or the CSRSS (Client Server Run-Time Subsystem). When such a system process is terminated, then your system switches to kernel mode. because it can’t operate without CSRSS or WinLogon.
Another cause of the c000021a error is mismatched files in the hard drive. You get this error after restoring system files from a backup or installing or updating device drivers, service, or third-party software. In this case, the restore program skips crucial system files, mostly because the program determined that they are in use by the system.
This error occurs when a user-mode subsystem, such as WinLogon or the Client Server Run-Time Subsystem (CSRSS), has been fatally compromised and security can no longer be guaranteed. In response, the operating system switches to kernel mode. Microsoft Windows cannot run without WinLogon or CSRSS. Therefore, this is one of the few cases where the failure of a user-mode service can shut down the system.
c000021A Fatal System Error on Windows 11/10
You may get the Fatal System Error from various factors. In this section, we’ll tackle the troubleshooting methods for them all. Some fixes work only when you can access the Windows environment and some work on BSoDs. Here are the solutions preferred:
- Uninstall the offending software.
- Run System File Checker
- Fix it with the DISM command
- Rebuild BCD and Fix MBR
- Repair hard-disk errors
- Perform System Restore.
- Use Cloud Reset option.
- Contact Microsoft.
If you cannot boot to your desktop normally, you may have to access Advanced Startup Options to access the recovery tools.
1] Uninstall the offending software
Do you remember when you first started experiencing the 0xc000021a error? It could be immediately after you installed or updated an application, system service, or driver.
The last software you installed or updated could be the culprit. If this is the case for you, you can fix the issue by uninstalling or disabling the buggy software. Press the Windows key and R simultaneously to open the Run dialog box.
Type appwiz.cpl in the Run dialog box and click OK. You can click on the Installed On column to sort the apps by their install date from the list of applications. This helps you find the most recent installation that might’ve caused the error.
Right-click on the application and select Uninstall. Follow the on-screen instructions to complete the uninstallation.
If you recently installed or updated any Driver software, you may want to consider removing it.
However, if the damage is already done, uninstallation will not help. In that case, you should perform a system restore to get back to a stable state of PC.
2] Run System File Checker
Run System File Checker in Safe Mode and see if that helps. This will repair corrupted or damaged Windows files. You will need to run this command from elevated CMD i.e. command prompt launched with admin privileges.
3] Run DISM
If you gained access to the system from the previous solution but couldn’t fix the c000021a error, you can run the DISM command in Command Prompt.
First, boot your computer into the Windows Safe Mode with Command Prompt. In the Command Prompt window, enter the following command and run it by pressing ENTER:
dism /image:C:\/cleanup-image/revertpendingactions
4] Rebuild BCD and Fix MBR
Boot Configuration Data (BCD) is a firmware-independent database for boot-time configuration data. To rebuild the BCD or Boot Configuration Data file in Windows type the following command and hit Enter. You will need to use the admin elevated command prompt.
bootrec /rebuildbcd
To get a new bootloader, type in the following command in the elevated command prompt.
bcdboot c:\windows /s c:
C is your system drive where Windows is installed. If this doesn’t work, you can try repairing the Master Boot Record.
5] Repair hard-disk errors
This may not be a 100% full proof solution, but you can run chkdsk in the command prompt to see you don’t have any issue with your hard drive. You could execute the following command:
chkdsk c: /f /r
It is possible that when installing programs on the corrupt part of the disk might cause issues.
Related: Error 0xc000021a or 0xc0000001, Your PC couldn’t start correctly.
6] Run System Restore
You can resort to performing a system restore. and see if that helps.
If you receive Stop Error 0xc000021a, and System Restore stops working after Windows 10 Update, then its a known issue for Windows 10. This post may help you – System Restore not working after Windows 10 Update.
7] Perform Cloud Reset
If the system restore doesn’t fix it, your last option is to do a Cloud Reset.
8] Contact Microsoft
If nothing seems to work, you can always contact Microsoft Support Team by following this link.
TIP: More ideas to fix Windows Blue Screen errors.
All the best.
