

Reboot won’t help as the problem soon reoccurs. This error is turning the screen black and is not letting me do anything. DDE Server Window: explorer.exe – System Warning: Unknown Hard Error. I am getting encountered with an error right after I installed the Windows 10 update. Follow the troubleshooting steps mentioned in this article to fix the error and recover the lost files. Regardless of the criticality of the error, it can still be fixed, however, the same cannot be said for the lost data. This is a very critical error that freezes your system and leads to potential data loss. The “Unknown Hard Error” message is associated with the explorer.exe file, sihost.exe file, ctfmon.exe, and other.

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Summary: Know how to fix the “ Unknown Hard Error ” on Windows 10.
