How to find and delete duplicate files in Windowson January 16, 2023 at 15:16 Tech Advisor


If you regularly create, download or import any files, duplicates are inevitable. Copying documents or folders from one location to another or multiple backups both means the same file will be in more than one location.

Finding and deleting these is an easy way to free up space, and it’s possible using third-party software. Doing so manually will probably take ages, but it’s worth making sure apparent duplicates are actually the same file.

Some cameras use the same file name even when the photo is different, so it’s worth checking its size and date to see if they’re identical. The popular CCleaner software relies on name alone, so it’s not recommended in this situation.

There are paid solutions, but the app we’re using here is completely free and does everything you need.

How to find and delete duplicate files from Windows

Even though these are files you want to delete, it’s worth backing up your important data first.

From there, the method is the same on both Windows 10 and Windows 11, as it relies on third-party software that’s available for all recent versions of WIndows.


Install Auslogics Duplicate File Finder

Anyron Copeman / Foundry

Head to the Auslogics website and click ‘Download Now’ – it should automatically recognise the operating system you’re using and download the right version.

Once complete, double-click the downloaded file, followed by ‘Agree and install’ and ‘Next’. Installation should only take a few seconds.


Find duplicate files

Anyron Copeman / Foundry

Launch the app if it’s not open already and it should look like the above. Chose which disk drives you’d like to be searched for duplicates, then ‘Look for all file types’ or only a specific few.

Click ‘Search’ to begin the process – it should only take a minute or two.


Select chosen duplicates

Anyron Copeman / Foundry

Once the search has finished, you’ll be presented with a list of all the duplicates which have been found (if there are any).

Clicking ‘Select’ will choose all duplicates by default, but the drop-down next to it has options for just one duplicate of each file, the earliest/latest version of a duplicate or only duplicates of .zip files. Of course, you can review these manually if you’d prefer.


Delete chosen duplicates

Anyron Copeman / Foundry

Once you have all the duplicates selected, it’s time to delete them.

Clicking ‘Delete Selected Files’ will send them to your computer’s Recycle Bin (where they’ll be permanently deleted after 30 days), but the drop-down next to it lets you choose ‘Rescue Center’ (backed up to the cloud so you can retrieve them if necessary) or permanent deletion immediately.


Confirm deletion

Anyron Copeman / Foundry

You’ll now see a pop-up warning you that files will be moved and deleted. Click ‘OK’ to continue – deletion should only take a few seconds.

That’s it! Your duplicate files will all now be removed.

If you don’t want to use the Auslogics app, Paralells Toolbox is a useful alternative. Finding and removing duplicate files is just one of the many features it offers, but you’ll have to pay $24.99/£20.99 per year for a subscription.

Once installed, just open the app and click Files > Find Duplicates. The official video below is filmed on a Mac, but the process is similar on Windows:

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