: The primary reason for this specific build was to fix a crash that occurred when users attempted to use the Large File Finder or Duplicate File Finder tools. It also addressed a major bug in the background update service.
This version focused on three primary areas: stability, accessibility, and modern OS compatibility.
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In 2026, CCleaner remains a leading optimization tool, with the "Professional" tier offering automated maintenance that the free version lacks. The core features available in version 1.18.30 and subsequent releases include: