White Icons on Windows 11 – IconCache.db Rebuild Did Not Help

Because this affects several Windows 11 machines and a server, and rebuilding IconCache.db did not help, I would first look for a shared configuration rather than repeat the same cache cleanup everywhere. On one noncritical affected PC, compare the icon on the actual executable with its shortcut, then test the same items from a new local user profile. That separates a broken shortcut or user-specific setting from a problem affecting the whole machine. If Windows components have incorrect icons across profiles, use an elevated terminal to run DISM.exe /Online /Cleanup-image /Restorehealth, followed by sfc /scannow after DISM completes. Record both results rather than assuming repairs succeeded. Compare affected machines for a common image, customization software, policies, and the approximate start date. Treat server changes separately with a backup and maintenance plan. Screenshots and exact Windows versions would help distinguish missing icons from missing application files.