The Best Way to Clean Windows 10: A Step-by-Step Guide

Over time, every Windows installation builds up junk that takes up space and wastes resources. We all forget to perform regular maintenance, so often the problem comes from old files and programs.

If you don’t clean your computer, though, before long you’ll encounter low disk space warnings and notice it slowing down. We’ll walk you through how to clean Windows 10 using a variety of tools for different situations.

Step 1: Erase Temporary Junk
The OS includes a pair of similar tools for clearing out old temporary files from your disk, meaning you don’t need a dedicated Windows cleaner app. They’re a great first stop on your Windows 10 cleanup journey.

Disk Cleanup





If you don’t mind an old-school interface, the classic Disk Cleanup tool gets the cleaning job done. Access it by typing Disk Cleanup into the Start Menu and selecting the disk you want to clean.


If you’ve recently updated to a new major version of Windows 10, you’ll see a Previous Windows installation(s) entry. Deleting this will remove the old files Windows keeps for 10 days that allows you to easily go back to an earlier version. You should also avoid removing the Windows ESD installation files option, as this is used for resetting your PC via Settings.

Storage Sense



Windows 10 includes much of this same functionality at Settings > System > Storage. You can use Storage Sense, found at the top, to automatically clean up files when your disk space is low, or every so often.

Step 2: Eliminate Large Files


You’ve removed unnecessary files; the next step to clean up Windows 10 is to find old data taking up a lot of space on your computer. To help with this, download TreeSize Free, which will scan your storage and show you where the biggest files are.

Once installed, search for TreeSize on the Start Menu and launch it using the (Administrator) link so you can scan everywhere. To start, choose Select Directory in the top-left and select your main storage disk.

Uninstall Big Programs

Under Program Files (and/or Program Files (x86) on 64-bit Windows), you’ll find files for most of the apps you have installed. If you don’t use some of these anymore, head to Settings > Apps > Apps & features to uninstall them.

Step 3: Clean Windows 10 Bloatware

Most store-bought computers come loaded with worthless manufacturer bloatware that wastes space and duplicates functionality already in Windows. In addition, Windows 10 itself includes some junk apps you probably never use.

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