Diagnose and fix Wallpaper Engine UI not opening (no tray icon, window never shows): the CEF profile folder is not writable, so libcef asserts at startup. One-click PowerShell, additive permission fix.
windows steam powershell acl tray-icon chromium cef troubleshooting wallpaper-engine libcef diagnostic-tool crash-fix windows-11 no-gui icacls permission-denied ntfs-permissions wallpaper-engine-fix ui-crash singleton-lock
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Updated
Oct 20, 2026 - PowerShell