If you lot are getting an fault piece Windows 10 upgrade which says STOP 0XC000021A or STATUS_SYSTEM_PROCESS_TERMINATED, then its a safety effect within the Windows. It is equally good possible that the organisation files convey an issue, as well as they convey been incorrectly modified. This does non necessarily hateful that at that spot is a malware problem, exactly 1 of the late installed application mightiness convey modified or corrupted around core files. This conduct volition assistance you lot troubleshoot this problem.
This fault occurs when a user-mode subsystem, such equally WinLogon or the Client Server Run-Time Subsystem (CSRSS), has been fatally compromised as well as safety tin plough over the axe no longer last guaranteed. In response, the operating organisation switches to amount mode. Microsoft Windows cannot run without WinLogon or CSRSS. Therefore, this is 1 of the few cases where the failure of a user-mode service tin plough over the axe near downwards the system.
0XC000021a STATUS_SYSTEM_PROCESS_TERMINATED
1] Uninstall Recently installed Program or Perform a System Restore
A mutual crusade of this occupation is around 3rd-party program. Try to position whatever novel plan which you lot convey installed as well as uninstall it. If you lot scream upward the late installed program, you lot tin plough over the axe endeavour uninstalling them 1 past times one.
However, if the harm is already done, uninstallation volition non help. In that case, you lot should perform a organisation restore to larn dorsum to a stable soil of PC.
2] Run System File Checker
Run System File Checker. This volition repair corrupted or damaged Windows files. You volition require to run this ascendance from elevated CMD i.e. ascendance prompt launched alongside admin privileges.
3] Rebuild BCD as well as 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 inward Windows type the next ascendance as well as hitting Enter. You volition require to run admin elevated ascendance prompt.
bootrec /rebuildbcd
To larn a novel bootloader, type inward the next ascendance inward the elevated ascendance prompt.
bcdboot c:\windows /s c:
C is your organisation drive where Windows is installed. If this doesn’t work, you lot tin plough over the axe endeavour repairing the Master Boot Record.
4] Repair hard-disk errors
This may non last 100% total proof solution, exactly you lot can run chkdsk inward the ascendance prompt to run into you lot don’t convey whatever effect alongside your difficult drive. You could execute the next command:
chkdsk c: /f /r
It is possible that when installing programs on the corrupt business office of the disk mightiness crusade issues.
5] System Restore stops working & you lot run into the BSOD
If you lot have Stop Error 0xc000021a, as well as System Restore stops working subsequently Windows 10 Update, as well as thence its a known effect for Windows 10. This post service may assistance you lot – System Restore non working subsequently Windows 10 Update.
5] Contact Microsoft
If zip seems to work, you lot tin plough over the axe e'er contact Microsoft Support Team past times following this link.
Let us know if anything hither helped you lot solve the issue.
Source: https://www.thewindowsclub.com/
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