Second, it comes with a cleaner for the registry, which identifies any errors and corrects them on time.First, it deletes potentially unneeded or temporary files that are usually left by other programs.It works in several ways to get rid of unwanted files that impact computer performance. We've renamed the 'Windows SubSystems Temp Files' rule to 'Network Data Usage' to make it clearer that this rule removes historical, statistical data about your network usage.CCleaner is convenient.We expanded our Google Chrome 'Metrics Temp Files' rule to include Setup Metrics.We added cleaning of bookmark backups in Edge and Firefox.This new feature puts apps into 'Sleep' mode if they're not needed to boost system performance. We've also released a preview of our new Performance Optimizer feature to a limited number of CCleaner users for their feedback. In this release, we've expanded cleaning for Edge, Firefox and Chrome and renamed some files for better clarity around what CCleaner is cleaning. If you're a CCleaner Professional user, you can now set CCleaner to run every time you shut down your browser, or you can set it to monitor your entire system in the background and detect when to Clean based on disk space that can be saved! CCleaner now includes a duplicate file finder tool, which can quickly find these files, and allow you to choose which ones to delete - freeing up more space on your PC than ever before! You may not realize how many duplicate files are stored on your computer, taking up valuable hard drive space. Including File Extensions, ActiveX Controls, ClassIDs, ProgIDs, Uninstallers, Shared DLLs, Fonts, Help Files, Application * * Paths, Icons, Invalid Shortcuts and more.Advanced Registry scanner and cleaner to remove unused and old entries.Including: Firefox, Opera, Media Player, eMule, Google Toolbar, Netscape, Office XP, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip and more.Third-party application temp files and recent file lists (MRUs).Recycle Bin, Temporary files and Log files.Internet Explorer Cache, History, Cookies, Index.dat.For advanced users, CCleaner also comes with a registry scanner that scans for invalid references. CCleaner removes unused and temporary files from your system - allowing it to run faster, more efficiently and giving you more hard disk space.

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