Windowblinds Has Detected A Problem With Core Files New Best

Guide: Fixing WindowBlinds "Core Files" Error

Prerequisite: Disable WindowBlinds First

Before making any changes, you need to stop the software from running to ensure the repair process works correctly.

Here’s an interesting and engaging write-up on the infamous “WindowBlinds has detected a problem with core files” error message: windowblinds has detected a problem with core files new

The "new" error is largely attributed to Microsoft's increased security hardening—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." Press Win + R , type wbconfig

Design

Press Win + R, type wbconfig.exe and press Enter.
If the error dialog appears, close it. Then hold Ctrl + Shift on your keyboard and right-click the WindowBlinds icon in the system tray.
Select "Repair Core Files" from the hidden context menu.
Allow the process to complete. It will rewrite checksum-verified copies of Wblind.dll and related drivers.
Restart the WindowBlinds service: Open Task Manager > Services tab > find WindowBlindsService > right-click > Restart.

If you just installed WindowBlinds on a fresh version of Windows, the problem might simply be that Windows hasn't updated its security certificates. If you just installed WindowBlinds on a fresh

Pause Windows Updates before Patch Tuesday – Check the Stardock forums for compatibility reports before installing KB updates.
Keep WindowBlinds Updated – Version 11.0+ has native support for Windows 11's security model. Do not run version 8 or 10 on Windows 11.
Create a Stardock Folder Exclusion – Permanently add the Stardock install folder to Windows Defender exclusions.
Avoid "Unofficial" Skins – Only download .wba files from WinCustomize.com. Random DeviantArt skins may contain corrupted manifests.
Use WindowBlinds in "Per-Application" Mode – Instead of skinning the entire OS, go to Settings > Performance > Enable "Skin only applications." This reduces conflicts with Explorer.