With Core Files New - Windowblinds Has Detected A Problem

Guide: Fixing WindowBlinds "Core Files" Error

Method 3: Restore Missing DLLs from SysWOW64

The "new" error often deletes wblind64.dll from the SysWOW64 folder (even on 64-bit systems). Here’s how to fix it manually:

  1. Open File Explorer and navigate to: C:\Windows\SysWOW64\
  2. Look for wblind64.dll. If it is missing or has a size of 0 KB, proceed.
  3. Navigate to C:\Program Files (x86)\Stardock\WindowBlinds\
  4. Copy wblind64.dll from the install folder.
  5. Paste it into C:\Windows\SysWOW64\ (you will need admin permission).
  6. Open Command Prompt as Admin and run: regsvr32 C:\Windows\SysWOW64\wblind64.dll
  7. Reboot.

Method 2: The "Cache Nuke" (Fix for Immediate Crash on Apply)

If WindowBlinds opens but crashes when you apply a skin: windowblinds has detected a problem with core files new

  1. Press Win + R, type %LocalAppData%\Stardock\WindowBlinds\Cache, and press Enter.
  2. Delete everything inside the Cache folder. Do not delete the folder itself.
  3. Press Win + R again, type %Temp%, and delete all files there (skip any in use).
  4. Restart Windows Explorer from Task Manager (Ctrl + Shift + Esc > Processes > Windows Explorer > Restart).
  5. Reapply your skin.

6. Add Exclusions to Antivirus

The Fixes That Work (and the Myths)

Myth: Reinstalling WindowBlinds always fixes it.
Truth: Often, the installer leaves old configs behind. A clean reinstall (manually deleting %appdata%\Stardock\WindowBlinds and registry keys) is needed. Guide: Fixing WindowBlinds "Core Files" Error Method 3:

Myth: It means your Windows is broken.
Truth: Rarely. Usually, it just means WindowBlinds’ own signature check failed — often a false positive. Method 2: The "Cache Nuke" (Fix for Immediate

Real fixes that worked for the community:

  1. Run WindowBlinds as Administrator — sounds simple, but core file access requires elevated rights.
  2. Disable antivirus temporarily — then reapply the theme.
  3. Use Stardock’s “Repair” option in the installer — not a full reinstall.
  4. Restore from a backup of C:\Program Files (x86)\Stardock\WindowBlinds if you have one.
  5. The nuclear option: Uninstall, run a registry cleaner (e.g., CCleaner), reboot, reinstall.
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