Windowblinds Has Detected A Problem With | Core Files New
If all else fails:
regedit.exe and delete:
Windows 11's Memory Integrity feature (Core Isolation) blocks third-party DLL injection. This is a common cause of the "new" error.
If WindowBlinds opens but crashes when you apply a skin: windowblinds has detected a problem with core files new
Sometimes, a third-party skin (downloaded from WinCustomize) contains malformed PNG assets or an invalid .uis file. This corrupts the local cache located at:
%LocalAppData%\Stardock\WindowBlinds\Cache
Published by: TechRescue Labs Reading Time: 8 Minutes If all else fails:
WindowBlinds works by hooking deep into the Windows theme engine (DWM – Desktop Window Manager). It replaces critical system drawing APIs with its own. The "core files" refer to essential binaries installed by WindowBlinds, such as:
The "(new)" in the message typically appears after one of three events: Open regedit
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.