CCleaner is the number-one tool for cleaning your Windows PC. It protects your privacy online and makes your computer faster and more secure. Easy to use and a small, fast download. v4.01.4093 (25 Apr 2013) - Improved History cleaning for Google Chrome. - Improved compatibility with Firefox v19 and newer. - Optimized Registry cle aning algorithm for Windows 8. - Improved Internet Explorer 10 compatibility. - Improved Duplicate File Finder tool. - Optimized System and Browser Monitoring (Pro Version). - Added cleaning for Adobe Acrobat XI, VSO Blu-ray and DVD Converter Ultimate, Oxygen XML Editor 14 and Connectify Hotspot. - Improved cleaning for Google Earth and MailWasher Pro. - Minor GUI improvements. - Minor bug fixes. aning algorithm for Windows 8. - Improved Internet Explorer 10 compatibility. - Improved Duplicate File Finder tool. - Optimized System and Browser Monitoring (Pro Version). - Added cleaning for Adobe Acrobat XI, VSO Blu-ray and DVD Converter Ultimate, Oxygen XML Editor 14 and Connectify Hotspot. - Improved cleaning for Google Earth and MailWasher Pro. - Minor GUI improvements. - Minor bug fixes.