This message typically appears after a Windows update, a system file checker (SFC) scan, an antivirus cleanup, or even after a seemingly unrelated driver installation. While alarming in tone, it’s almost always fixable without losing your themes or settings.

: Right-click wb11config.exe in the installation folder, select Properties , and go to Digital Signatures . If there is an error listed, your system is failing to verify the Stardock security certificate.

) are blocked, corrupted, or fail a digital signature check.

If you have tried all five methods and still see the message "WindowBlinds has detected a problem with core files new," you may be dealing with a hardware race condition or a conflict with rare software (e.g., MSI Afterburner, RivaTuner, or old NVIDIA drivers).

Last tested with WindowBlinds 11 on Windows 11 23H2.