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CCleaner 4.5 was released by Piriform (now owned by Avast) around . This was a period when Windows 8.1 was the newest operating system, and Windows XP was nearing its official End of Life (April 2014). Version 4.5 was considered a "stable build" focused on browser cleaning and system optimization for the early 2010s. download ccleaner 4.5
Improved keyboard navigation for the duplicate file finder tool. How to Download Download CCleaner | Clean, optimize & tune up your PC, free
To understand the demand for the 4.5 branch, one must understand the "Golden Age" of Piriform. Before its acquisition by Avast in 2017, Piriform was a boutique UK-based developer known for lightweight, no-nonsense utilities. CCleaner was their flagship product, beloved for two specific traits: it was incredibly small, and it stayed out of your way. Version 4
If you still decide to search for it, use extreme caution: verify file hashes (MD5/SHA256) and scan with multiple antivirus engines before execution. Do not run it on any PC connected to the internet or containing personal data.