tab. If you see an error there, the certificates are the culprit. 2. Configure Antivirus Exclusions
Arthur paused, his mouse hovering over the 'X'. "New? What does that even mean?"
The "new" error is largely attributed to —specifically the introduction of Smart App Control (SAC) and stricter Code Integrity checks in Windows 11 version 22H2 and later. WindowBlinds, which injects code into Explorer, is now often detected as a potential "untrusted driver." windowblinds has detected a problem with core files new
Create a rule named WindowBlinds and set the core action to .
When WindowBlinds launches its service on startup, it performs a cryptographic hash check or version signature verification on its core files. If any mismatch is found—even by one byte—it throws this error and disables skinning to prevent system instability. WindowBlinds, which injects code into Explorer, is now
This is a surprisingly common cause, especially on fresh Windows installations. The WindowBlinds installer relies on a valid digital signature to run its core files. If Windows doesn't have the latest list of trusted root certificates, it may block the installation or launch, triggering the core files error. As noted in a Stardock support thread, this "usually happens when the list of trusted root certificates in Windows is not updated (often on a fresh installation of Windows)" .
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the latest version of WindowBlinds from Stardock's official website to ensure compatibility.
Method 3: Use the Official Purge Script for a Clean Reinstall This is a surprisingly common cause