In 2020, Piriform (now owned by Avast) dropped support for Vista and Windows 7 (without SP1). If you try to run CCleaner v6.23 or v6.27, you will get the error: "This app can't run on your PC because it requires Windows 10 or later."
Windows Vista was notorious for its heavy resource usage and aggressive visual effects, which often bogged down older hardware. A modern version of CCleaner for Vista should focus on and stripping back OS bloat . Top Feature Concept: "Vista Aero & Sidebar Optimizer" ccleaner for vista
Wipes browser history and cookies to keep your data safe. 📂 Finding the Right Version In 2020, Piriform (now owned by Avast) dropped