The “Unknown Serious Error” test message is related to explorer.exe, sihost.exe, ctfmon.exe and other .exe files. Also learn how to recover data lost due to such error in simple steps with professional Windows data recovery software.
Run sfc /scannow. When your hard drive is compromised, it can lead to an unknown hard drive error and other blue screens of death errors. On the go, you can use the SFC command and then the CHKDSK command to fix this error. The System File Checker (SFC) is usually a utility built into Windows to repair corrupted product files.
How do I fix explorer.exe unknown hard error?
DDE Server Window: System explorer.exe – Warning: Unknown fatal error…. So, you can run a CHKDSK statement to check the fix and your current issue:
- Start a command prompt (administrator).
- At the command prompt, type this command chkdsk /f /r, then press Enter.
- Wait for the product scan to complete . full. Below you can see which issues have been resolved previously.
What does unknown hard error explorer.exe mean?
Among all fatal errors, the most common fatal error is sihost.Unknown exe and the CTF loader. It is said that if you cannot unlock the file or start resume and you are prompted that the desktop is not available, you will see an error message.
What is Explorer EXE unknown hard error?
The almost impossible unknown error can be caused by crisscrossing .exe, sihost.exe, ctfmon.exe or other .exe files. Once you find the culprit of the problem, you can temporarily uninstall any app or perform any update. Unknown, the hardware error can also be caused by corrupted system files or registry entries.
How do I fix explorer exe unknown hard error?
DDE server window: explorer.-exe system warning: unknown fatal error. So you can also run CHKDSK to run the check command and fix the issue:
What are the differences between unknown unknown risks and known unknown risk?
Differences Between Mentioned and Unknown Risks In order to distinguish between known and unknown issues, project managers are encouraged to prioritize project objectives. Detected risks can be identified, analyzed and notified in advance, while unknown risks remain unforeseen and are consistently described.

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.