Registry Cleaner for Windows PC — Avast Cleanup

Avast Cleanup’s registry cleaner will fix broken registry items, repair errors, and streamline your Windows registry. Download Avast Cleanup today to optimize your entire PC and harness the full power of your machine.

Clean up your registry easily
Speed up your device
Powerful performance tools
We have 30+ years of experience

The best Windows registry cleaner out there, and so much more

The best Windows registry cleaner out there, and so much more

Windows couldn’t operate without its registry, which stores critical data and settings for your operating system and all the hardware and software you have. That’s why it’s important to perform regular registry repair to ensure optimal PC performance. Thankfully, it’s a snap with Avast Cleanup.

The benefits of Avast Cleanup include:

Prevent crashes

Avast Cleanup fixes broken registry items and repairs your registry. Say goodbye to error messages and crashes.

Boost performance

With an optimized registry, your system will gain increased stability and better overall performance.

Erase malware

Malware can cause registry issues. Even after you remove malware, leftover traces can linger, which our cleaner will fix.

Automatic maintenance

Automatic maintenance means regular registry cleaning — along with browser, disk, and shortcuts cleaning.

Suite of tools

It’s not just a registry cleanup tool — benefit from a powerful suite of optimization and cleaning tools.

Fixes problems

Avast Cleanup can also fix problems on your Windows desktop or laptop and make your PC run just like new.

How much does Avast Cleanup help? Let’s talk numbers

Avast Cleanup cleans your registry and fixes a host of other PC issues automatically. While our lab tests are indicative only, and your results may vary, we found:


Faster performance

With unnecessary files deleted and issues corrected, you can browse, email, and game much faster.


Quicker startup times

Windows is faster and more stable with a fixed registry, so you can start up your PC more quickly.

71 GB

Cleaned up

Remove unnecessary registry items, plus junk from your browser and hard disk to get tons of extra space.


Integrated tools in one app

Enjoy a full suite of powerful cleaning features that work together to help your PC perform better.

Give your machine the ultimate tuneup

Whether you use Windows 11, Windows 10, Windows 8, or Windows 7, repair your registry and fix other critical PC issues with our patented, breakthrough technology.

Clean up your Mac and mobile devices, too

It’s not only Windows machines that can benefit from a good tidying. Unneeded apps, junk data, and sub-optimal settings can cause problems on any device.

Speed up and fully optimize your Apple machine with Avast Cleanup for Mac.
Optimize your phone and get it running up to 20% faster with Avast Cleanup for Android.
Browse faster without ads, and enjoy encrypted and private browsing with Avast Secure Browser for iOS.

Download Avast Cleanup and fix your registry now

Don’t waste any more time struggling with crashes or error messages. Download Avast Cleanup to repair your registry today and enjoy automatic maintenance going forward. A cleaner, faster PC is just a few clicks away.


Do I need to clean my registry?

To remain stable and function properly, the Windows operating system relies on its Windows registry — a database of settings and information for all your hardware and software. If you’re saddled with broken registry items, you can suffer frequent crashes and error messages, issues with apps, and generally decreased performance overall. It’s important to regularly clean and repair your registry — but make sure to use a safe registry cleaner tool so that you don’t accidentally delete anything that’s actually necessary.

How do I clean my registry?

With Avast Cleanup, it’s easy to clean your registry. Simply run a scan and Avast Cleanup will identify broken registry items, orphaned entries, invalid file type pointers, and old startup entries from third parties. Avast Cleanup safely deletes or repairs all problematic registry entries. Then, enable our built-in Automatic Maintenance feature so we can maintain your registry regularly, without you having to lift a finger.

Is Avast’s registry cleaner safe?

Yes. Avast Cleanup and its built-in registry cleaner tool were designed by security experts. It’s important to use a safe registry cleaner, because it’s easy to break something if you go digging around in your registry without knowing what to do. Our patented technology will identify exactly what can be safely deleted, while securely optimizing the rest.

System requirements

We're not demanding. All you need is Windows 11, Windows 10 except Mobile and IoT Core Edition (32 or 64-bit); Windows 8/8.1 except RT and Starter Edition (32 or 64-bit); Windows 7 SP1 or higher, any Edition (32 or 64-bit)


Windows fully compatible PC with Intel Pentium 4 / AMD Athlon 64 processor or above (must support SSE2 instructions)


256 MB RAM or above


100 MB free space on the hard disk


Internet connection to download, activate, and maintain application updates


Optimal standard screen resolution no less than 800 x 600 pixels is recommended

Windows 10 compatible

Enjoy private browsing with Avast Secure Browser for iOS

Free install

Tune up your phone with Avast Cleanup for Android

Free install

Get rid of junk files and optimize your Apple machine with Avast Cleanup for Mac

Get it now

Get rid of junk files from your Windows registry with Avast Cleanup for PC

Download free trial