How to clean the registry in Windows 10 (5 best ways)

Since most of us rarely dive into the Registry Editor, many have no idea whether something needs to be cleaned or not. However, over time, broken, outdated and even missing registry keys collect in your registry, which slows down your computer’s performance. You may even get an error sometimes. With Windows tools and some third-party programs, you can quickly clean up your Windows 10 registry.

Causes of registry errors

If you’re not in trouble right now, you might not think cleaning your registry is important. But as you install and uninstall applications and hardware, new entries are created in the registry. This includes Windows updates. However, they are not always completely removed when you uninstall applications or make other changes to the system.

This forces your computer to look for hardware and applications that work with those keys. The more they accumulate, the higher the likelihood of problems. Cleaning your registry every few months helps prevent this.

1. Use Disk Cleanup

The easiest way to clean up Windows 10’s registry is to use Disk Cleanup, which is also great for cleaning up excess files from your hard drive. Disk Cleanup is not intended for the registry, but it can complete the removal of leftover applications and drivers. When the tool removes these files, the associated registry entries are often removed as well.

Open Search in Windows 10 and type Disk Cleanup. Select the result that appears.

The tool starts scanning automatically. When you’re done, click on “Clean up system files.” This adds a few more search options to the tool. The tool runs a second time, giving you additional options.

Check any options that you do not need. You can check all of them. Just make sure there is nothing in your shopping cart that you would like to keep. Click OK to clean up your system.

2. Using DISM

DISM, which stands for Deployment Image Servicing and Management, is a built-in Windows tool used to fix updates and system errors. It can also help troubleshoot problems with corrupted registry entries. While not a complete registry cleaner, it can improve your registry.

Open “Search” in Windows 10 and enter “cmd”. Then select Command Prompt and Run as Administrator.

Type DISM / Online / Cleanup-Image / ScanHealth at the command prompt and press Enter.

Scanning finds and fixes errors. Not all of them will be linked to your registry. It can also help your computer perform better by fixing problems you never knew existed.

3. Use CCleaner

CCleaner has been a popular PC cleaner for many years. From removing cookies and temporary files to helping you manage startup options, it does a little bit of everything, including cleaning your registry. Better yet, you can back up your registry before cleaning it, which is a very good idea.

While premium options are available, the free version is enough for you. You can launch the tool by right-clicking the trash can or open it from the start menu.

4. Clean with Wise Registry Cleaner

Wise Registry Cleaner is a free lightweight tool to clean your Windows registry. It offers three modes, although Quick Scan is usually best for most users.

A premium version is available, but the free version handles pretty much everything you need. The premium version offers scheduled cleaning. Otherwise, just take a note to use Wise Registry Cleaner every few months.

5. Use the Auslogics registry cleaner

Auslogics Registry Cleaner has long been helping to keep registries clean. The free version provides a basic scan, which is often sufficient for most users. However, you can upgrade to the premium version for notifications and deeper scanning and cleaning.

You can review all entries before deleting anything. This gives you complete control. It is also worth noting that the tool selects only secure records for deletion.


While the above methods are usually safe, it’s always a good idea to back up your registry before cleaning it. In addition to regular cleaning, you can also optimize your system to keep your computer running faster.

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