Press Windows + R and type regedit.exe
Navigate to this location: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows
In the left pane of this registry location, take the ownership of Windows key.
Now highlight the Windows key in the left pane and in the right pane look for the registry string (REG_SZ) named Load.
The Value data of this registry is the root cause of this issue.
Are you facing a fatal “unknown error” in Windows 10? The “unknown error” fatal message is now associated with explorer.exe, sihost.exe, ctfmon.exe, and other .exe computer data files. This is a very critical error that causes your system to freeze and possibly lose data. Regardless of criticality and bug, you can always fix the following.
Usually, System Warning: Unknown Fatal Error is caused by corrupted system files or Windows registry entries on your computer and results in a critical black screen, taskbar freeze, and disappearing desktop icons. Follow the instructions we have prepared in this content to learn more about how to resolve the issue.
When you see an unknown grumpy error on your laptop, there is a physical error in the system and it cannot be detected when you restart your computer. In fact, an unknown hardware error is sure to happen when your internal drive gets corrupted. ?
How do I fix Sihost exe system warning unknown hard error?
To fix the sihost.exe error, you can try uninstalling newly installed features. If you do not want to remove these items one by one, it is recommended that you perform a configuration restore. This will return your Windows to a previous state where you didn’t encounter any errors.
How do I fix explorer.exe unknown hard error?
DDE Server Window: explorer.exe – System Alert: Unknown Fatal Error… Here’s how you can run the CHKDSK command to find and fix the problem:
- Start Command Prompt (Administrator).
- At the command prompt, type this important command chkdsk /f /r and just press Enter.
< li>Wait for the system to execute frequently scanning. At the end you will see what problems have been solved.
What does unknown hard error explorer.exe mean?
Among all cases of serious error, sihost.exe unknown fatal error missing CTF loader is the most common one. It is said that if you cannot unlock the file or start the registry, a prompt appears and the desktop is not too accessible, you will also see an unknown explorer.exe hard supervisor error.
What is Explorer EXE unknown hard error?
The unknown fatal error can be caused by explorer.exe, sihost.exe, ctfmon.exe and other .exe files. Once you find the culprit of the problem, you and your family can uninstall this app or update it for now. An unknown type of fatal error can also be caused by corrupted system files or Windows registry entries on your computer.
How do I fix explorer exe unknown hard error?
DDE server window: explorer.exe – Unknown system warning: hardware error… So you can run the CHKDSK command to check and fix the problem:
What are the differences between unknown unknown risks and known unknown risk?
Differences Between Known and Unknown Risks To roughly distinguish between known and unknown risks, each project manager is advised to focus on the objectives of the project. Known risks can be very well identified, analyzed and planned, while unknown risks are unpredictable and defy description.

Ermias is a tech writer with a passion for helping people solve Windows problems. He loves to write and share his knowledge with others in the hope that they can benefit from it. He’s been writing about technology and software since he was in college, and has been an avid Microsoft fan ever since he first used Windows 95.