Best Free Registry Cleaners To Fix Errors And Improve Performance On Windows PC

Due to software or hardware changes, broken registry items gets cluttered with errors and broken settings, which eventually causes slow performance, system crash or blue screens.

The Windows Registry is a collection of databases having low-level settings, options, and other values for software and hardware that are crucial for Windows OS.

That’s why, it’s very important to clean PC registry by removing junk and fix errors that accumulate over time. It helps improve performance on Windows.

For your ease we have tested several free registry cleaners tool for Windows PC available on the Internet. We found that CCleaner and Advanced SystemCare Free proved to be the best registry cleaners.

5 Best Free Registry Cleaner Software For Windows

How We Tested? We installed each free registry cleaner software on our systems running Windows 10 OS. We evaluated each tool on the basis of ease of use, performance and reliability on Windows OS. Then we gathered data from online sources to come up with the list of five best registry cleaners programs.

Caution: The Windows registry is the most sensitive area in Windows OS because it stores vital information. Therefore, it is advisable to always create a backup before using registry cleaners to fix broken registry items.

1. CCleaner


CCleaner is the best registry cleaner that clean junk files, trackers, unwanted apps, duplicates and more for free. After various upgrades this app has earned its position at the top by offering features that even premium programs don’t. CCleaner professional is its paid version which offers 7 more new features. This free PC cleaners also supports Mac and Android.

Windows, Mac | Free

What You May Like
  • The built-in Registry Cleaner scans the fix registry errors for more than a dozen types.
  • It removes unused registry entries, file extensions, shared DLLs, application paths and invalid shortcuts.
  • CCleaner prompts you to create back up before carrying out any registry repair.
  • It’s neat and clean interface makes it one of the easiest programs to use.
  • 1- click cleaning option for beginners to optimize their computers without any fuss.
  • It’s the best PC optimizer, noticeably improve performance on Windows PC.
What You May Not Like
  • CCleaner installer can be bundled with the Google Chrome browser. However, you can skip it during installation.

2. Wise Registry Cleaner

Wise Registry Cleaner Software

Wise Registry Cleaner comes in very close to the top-rated CCleaner. It is a fantastic free and safest registry cleaning tool for Windows. It quickly fixes error and remarkably improve performance on Windows OS. First this free computer cleaner analysis whole system and lets you monitor each problem. This program automatically fix all registry problems in one click.

Windows, Mac | Free

What You May Like
  • One of the safest registry cleaning tools for Windows with various scan modes.
  • Categorically displays detected registry errors after analysis.
  • Before cleaning or registry repair, the registry is automatically backed up.
  • You can schedule automatic registry cleaning on a daily, weekly, or monthly time frame.
  • A free PC tune up tool that optimizes system settings for better performance.
  • It also features a registry defrag option.
What You May Not Like
  • Tries to install other programs during installation.

3. Advanced SystemCare Free

Advanced SystemCare Free

A comprehensive one-click, all in one solution for PC maintenance and protection suite to keep your computer clean, fast and secure. Advanced SystemCare Free is a Swiss Army Knife for PC optimization. It removes spyware and adware, prevent security threats, privacy protection, fix registry errors, temporary files cleanup, startup cleanup, repair Windows, speed up system and improve performance on Windows with 1-click in 1 minute.

Windows, Mac | Free

What You May Like
  • Its Windows registry repair technology guarantees stable PC performance.
  • Tunes up Windows configurations by eliminating system bottlenecks.
  • The Turbo Boost feature disables unnecessary apps/processes running in the background.
  • It helps fix errors and boost Windows startup speed and optimize network and browser configuration.
  • The new Face ID feature immediately captures the image of the intruder who breaks into your computer.
  • You will definitely find something useful for your machine in its massive library of tools, tweakers, and cleaners.
What You May Not Like
  • Many tools listed are shortcuts to separate applications and are not built-in.
  • Tries to install unwanted programs. You can decline them during installation.

4. Auslogics Registry Cleaner

Auslogics Registry Cleaner

Another best registry cleaner for Windows PC. This nifty utility is known for its ability to resolve system stability issues. It’s a simple yet efficient Windows registry cleaning tool. With the Auslogics Registry Cleaner installed in your PC, quickly analyze the Registry and fix errors so to improve performance on Windows. This tool fix or delete broken entries, non-existent file associations, un-installation leftovers, and other elements that can turn the Registry into a real mess.

Windows, Mac | Free

What You May Like
  • Quickly scans the registry keys and repairs them without a hitch.
  • You can review the registry entries the program finds to be corrupt and exclude any that you may want to keep.
  • A restore point is created by default making it easy to roll back the changes later.
  • The program is easy to use, has very little settings.
  • A notable feature is that it also displays the colored severity rating of the registry errors encountered.
  • Uses low-to-moderate system resources.
What You May Not Like
  • Auslogics Registry Cleaner tries to get you to install other unwanted programs during installation. You can simply uncheck those options to stop it from installing.

5. Registry Repair

Glarysoft Registry Repair Tool

A fast, simple and lightweight registry repair tool to fix errors and improve performance on Windows. This Windows registry repair tool analyzes more than a dozen of different areas in your registry, and identify up to 18 types of errors. It thoroughly scans the Windows registry for errors, invalid entries, Regedit optimization, etc.

Windows, Mac | Free

What You May Like
  • Uses intelligent algorithms to find and fix invalid registry entries.
  • Faster scanning speed with well-analyzed results.
  • It creates a backup copy every time you repair registry.
  • Minimalistic and user-friendly interface.
  • It doesn’t bundle third-party programs, nor make changes to your web browser.
What You May Not Like
  • No extensive configuration options.

Are Registry Cleaners Safe To Use?

The Best PC registry cleaner explained above are safe to use as these tools can find problematic registry and delete them. However, Microsoft doesn’t recommend using these third party registry cleaning tool.

The reason is back in the years, poorly developed free registry cleaner caused problems with computers. Fortunately, the quality of registry and system cleaners are significantly higher today. Most of these tools have built-in restore point, in case things don’t go as expected.