Any good registry cleaner available for Windows 11/10?

Unfortunately, both Windows 11 and Windows 10 don't have a built-in registry cleaner tool. 

A registry cleaner is a type of utility software designed for Windows systems that scans the Windows Registry for entries it considers unnecessary, invalid, or corrupted, and then attempts to remove or fix them.

What does a registry cleaner do?

1. Scans for Invalid or Orphaned Entries

Over time, when you install or uninstall programs, the registry may retain leftover entries such as file paths, program references, or settings that no longer point to valid files.

Registry cleaners search for these "orphaned" or "invalid" entries.

2. Removes Redundant Data

They delete old references to uninstalled software, missing DLLs, or unused file extensions.

The goal is to reduce clutter in the registry.

3. Attempts to Improve Performance

A smaller, cleaner registry may theoretically improve boot times or overall responsiveness, although on modern Windows versions (10 and 11), the effect is often minimal.

Most noticeable benefits are often psychological (“tidiness”) rather than measurable speed boosts.

4. Fixes Certain Errors

Registry corruption or broken entries can sometimes cause errors, like missing context menus, application crashes, or issues with startup programs.

A registry cleaner might repair or remove these problematic keys.

You can follow the above standard to find the best free registry cleaner for Windows 11 and Windows 10.