6 Best Registry Cleaner and Optimizer to Fix and Repair Microsoft Windows 10 Computer Errors

Updated: April 9, 2019 / Home » Desktop Computer Software » System and Registry Cleaner

Who needs a registry cleaner? If you’ve been using your Windows computer without formatting for 2 years, it is time to perform a spring cleaning. You’ll find these freeware that scans and optimize your registry useful. Not only can they speed up your computer, it can fix and repair some errors caused by bad registry corrupted due to bad software. If you’re looking for Norton Utilities and Ashampoo Registry Cleaner alternatives, below are 6 free alternatives.

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↓ 01 – Piriform CCleaner

ccleaner 6 Best Registry Cleaner and Optimizer to Fix and Repair Windows Computer Errors

CCleaner is the number-one tool for cleaning your Windows PC, perhaps the best. Perhaps one of the best of the best I’ve tried, it protects your privacy online and makes your computer faster and more secure. Easy to use and a small, fast download. Compatible with Microsoft Windows XP, 7, 8 and 10.

  • Faster Computer – Is your computer running slow? As it gets older it collects unused files and settings which take up hard drive space making it slower and slower. CCleaner cleans up these files and makes it faster instantly.
  • Fewer Errors & Crashes – Over time your registry can become cluttered with errors and broken settings which lead to crashes. CCleaner’s patented registry cleaner clears out this clutter to make your PC more stable.
  • Quicker Startup – Many programs run silently in the background when you start up your computer. CCleaner helps you get to work, or play faster by letting you disable unneeded programs.

↓ 02 – Comodo System Utilities (Scan Only)

Comodo System Utilities 6 Best Registry Cleaner and Optimizer to Fix and Repair Windows Computer Errors

Comodo System Utilities is one of my favorite registry cleaner, it is here to help you! Not only does it identifies, removes or repairs any corrupted Microsoft Windows entries, it also removes clutters to free up space and improve performance. Reach deep into your PC and destroy all space-wasting junk! Designed with you in mind, our user interface is so easy to understand it practically shows you how to clean your computer.

  • Automatically Clean – ‘Active Clean’ runs in the background and fixes registry errors in real-time – so your PC is always up to speed.
  • Safety First – SafeDelete™, our unique failsafe feature, makes accidental deletions a thing of the past.

↓ 03 – Wise Registry Cleaner


Yet another amazing Windows registry cleaner, the Wise Registry Cleaner can locate and correct problems in the Windows registry, such as missing references to shared DLLs, unused registration entries for file extensions, and missing referenced application paths.

  • Fix Registry Problems and Boost Your PC Performance – The registry keeps growing when you use Windows, so does the obsolete items in the registry, which would eventually lead to performance degradation and even system crash. Wise Registry Cleaner scans the Windows registry and finds errors & residual items in the registry and then cleans or defrags them. By fixing these residual and corrupted items in Windows registry, your system will run faster and more stable.
  • System Tune-up Optimizes System Settings for Better Performance – Other than cleaning up and defragging the windows registry, Wise Registry Cleaner can also optimize relevant system settings to improve both system speed and internet speed. After one-click optimization, you will see some improvement in your PC’s performance.
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↓ 04 – JetClean

jetblue 6 Best Registry Cleaner and Optimizer to Fix and Repair Windows Computer Errors

With a single click, JetClean gives you that fresh, new PC feeling again! Lightweight and easy to use, JetClean removes system junk files and improves your PC performance. Further cleans your system and releases more hard drive space. Removes temp files and recent file lists (MRUs) from many apps, including Windows Media Player, eMule, Google Toolbar, Microsoft Office, Adobe Acrobat, WinRAR, WinZip and many more …

  • One-click Clean and Tune-up – Cleans junk files and unneeded registry entries to improve the performance of your PC by one simple click.
  • Fast and Powerful Windows Clean – Swiftly locates and deletes any junk files that may exist in Recycle Bin, Recent Documents, Temporary files, Log files, Clipboard, DNS Cache, Error Reporting, Memory Dumps, Jump Lists.
  • More Stable Windows System, Less Crash – Reduces system errors and crashes by safely taking out all unused and old registry entries.
  • Light, Easy-to-use, and Reliable – Takes up very little space in your computer, but offers great computer clean and fine-tune functionality in a reliable way.
  • Improves PC Performance – Better PC performance for your work or gaming. Gives you the new computer feeling again.
  • Faster PC Startup and Program Launch – Helps speed up PC startup by rearranging applications that launch together with Windows. Shuts down programs that may slow down your system.

↓ 05 – Advanced SystemCare Free

iobit 6 Best Registry Cleaner and Optimizer to Fix and Repair Windows Computer Errors

Advanced SystemCare 7 Free does more than just cleaning, it is the real performance booster for your Registry, system, and Internet. It also optimizes, cleans, and fixes all kinds of PC problems with just 1 click. iobit is very well known for their reliability, I highly recommended this registry cleaner. Free Optimization Software to Speed Up PC and Clean Registry. Over 250,000,000 Users’ Choice for Cleaner, Faster PC. One-Click to Optimize PC & Protect Privacy in Real Time

  • Free Optimize for 300% PC Speedup – Advanced SystemCare Free is the best free optimization software for PC speedup, PC clean and registry clean under Windows 10, 8, 7, Vista and XP. With its help, users can clean up all kinds of junk files, sweep private information, and accelerate internet speed to enjoy a faster & cleaner PC. What’s more, new Startup Optimization module of Advanced SystemCare 10 can quickly scan startup items. This new feature works effectively in disabling unnecessary startup programs to boost startup time. Download it now to free from slow PC!
  • Monitor RAM, CPU & Disk in Real Time – Users speak highly of Performance Monitor once it was adopted. To expand its functionality and serve users better, New Resource Manager is added. Via Resource Manager, user can not only monitor RAM, CPU & Disk conditions of their PCs in real time, but also quickly end multiple tasks to release more space and make PC runs smooth & fast.
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↓ 06 – MaceCraft jv16 PowerTools

powertools 6 Best Registry Cleaner and Optimizer to Fix and Repair Windows Computer Errors

PowerTools Lite is the ultimate, freeware registry cleaner and software uninstaller. It cleans the Windows registry from left-over data and fixes registry errors, PowerTools Lite also immunizes your computer so you, or any software in your system, cannot access known malicious websites. And oh, it’s freeware, which means you don’t have to pay anything to use it. Ever. jv16 PowerTools is a PC System Utilities Software that works by cleaning out unneeded files and data, cleaning the Windows registry, automatically fixing system errors and applying optimization to your system.

  • Clean And Speedup My Computer makes Windows fast(er) – Clean And Speedup My Computer is a one-click solution for fixing registry errors and system errors in general, cleaning registry leftovers, as well as unneeded files such as old log files and temporary files.
  • Startup Optimizer – The Startup Optimizer has been designed to improve the speed of Windows startup to make your computer boot up faster.
  • Software Uninstaller – The Software Uninstaller can uninstall almost any software, as well as detect and remove any left-overs other software can’t!

4 comments on “6 Best Registry Cleaner and Optimizer to Fix and Repair Microsoft Windows 10 Computer Errors

  1. Gravatar
    Mike Robar [ Reply ]

    Although supposedly updated for 2017, this article references very old versions of software which would probably be dangerous to run on Windows 10, such as Advanced SystemCare 7 (now on version 10) or Power Tools Lite 2013 (current release is ver. 2017)

    • Gravatar
      Ngan Tengyuen [ Reply ]

      Thanks for informing us, we’ve updated the article again with the latest info and removed outdated software from the list. many thanks for pointing it out.

  2. Gravatar
    Richard Trump [ Reply ]

    I love CCleaner and have it on my system. However, JV16 power tools found and deleted 1257 registry errors that CCleaner missed, so it gets high marks in that department. Advanced SystemCare 7 installed too many background processes and had annoying pops so I uninstalled and deleted that without much of a trial. I downloaded Wise and will try that once JV16 finished clearing all the junk out. Thanks for the ideas.

  3. Gravatar
    LordBerly [ Reply ]

    I’ve been using CCleaner since Windows XP. Simply the best.

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