Windows 10 Troubleshooting: Error 0xc000021a
Introduction:
The user starts his or her system and finds "Your PC ran into a problem and needs to restart. We're just collecting some error info, and then we'll restart for you (0% complete)" error message appears on the screen. At the bottom, the user finds the error code 0xc000021a. After the percentage measurement is completed, the system restarts automatically.
Causes:
There are three main causes behind this error.
winlogon.exe:
It handles the login and logout procedures. If it is corrupted then the operating system switches to kernel mode. As a result, the system cannot boot.
Client Server Run-Time Subsystem (CSRSS):
The csrss.exe process is part of Client Server Runtime Process. If it is corrupted then again, the operating system switches to kernel mode. As a result, the system cannot boot.
Mismatched system files:
This can also cause this error. This can occur if the user has restored a hard disk from a backup. Some backup programs might skip restoring system files that they determine are in use.
Resolution:
Running SFC /scannow Command:
1. Restart the PC, hold the Shift key and click Restart button.
**2. ** Select Troubleshoot under Choose an option.
**3. ** Click Advanced option
**4. ** Select Command Prompt.
**5. ** Now in Command Prompt, type the following command and hit the Enter key after that.
SFC /scannow
**
**
Disable driver signature enforcement:
This will allow only Microsoft-signed drivers to load and not third-party drivers.
1. Restart the PC, hold the Shift key and click Restart button.
**2 ** Select Troubleshoot under Choose an option.
3. Click Advanced option
**4. ** Click on Startup Settings
5. Select option no. 7. Press F7 labeled as Disable driver signature enforcement.
6. Reboot.
Reference:
Bug Check 0xC000021A: STATUS_SYSTEM_PROCESS_TERMINATED
How to Disable Driver Signature Verification on 64-Bit Windows 8 or 10 (So That You Can Install Unsigned Drivers)
[The above article is based on Windows 10 Enterprise Insider Preview Build #16257]