PC Slow? Remove Duplicate Files on Windows 10 with the 3 Methods!

It is the time to remove duplicate files on Windows 10 when you find your PC slows down. Follow the guidance to remove them and make your device run smooth and fast.


By Irene / Updated on October 23, 2023

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When your Windows 10 computer becomes sluggish, it's typically because something is taking up too much storage space. This could be caused by apps, big files, or things you don't need. But even after cleaning those up, the problem might persist. Why? It's because many people haven't realized that duplicate files can accumulate and also consume a lot of storage space.

So, let’s remove duplicate files on Windows 10 and get back the smooth and fast computer with the shard 3 methods.

3 methods to remove duplicate files on Windows 10

To remove duplicate files on Windows 10, you typically have 3 available methods. Follow them to clean up the computer and make it run smoothly.

Method 1. Find and remove duplicate files in Windows 10 with File Explorer

If you want to remove specific duplicate files on Windows 10, like photos or documents, Windows File Explorer is a useful built-in tool. However, using this approach may require your patience since it involves manually recognizing file extensions and comparing them to find the latest versions.

Step 1. On the lower-left corner beside the Windows icon, enter Indexing Options on the search bar, then click it.

Indexing options

Step 2. Click Modify, and then select Show all locations. A pop-up will appear to ask for your login details. Make sure that you are using an administrator account when doing any modification using this setting.

Show all location

Step 3. Check if all of the boxes are checked under the Changed Selected Locations section.

If yes, click OK, and then click the Close button. If not, check all the boxes.

Change selected loction

Step 4. On your keyboard, press the Windows + E keys to open the File Explorer. It is easier to find your files under your user account. To open your user account, go to Windows (C:), then select the Users folder.

Step 5. On the upper-right corner, click Search, and then enter the following extensions based on their format:

File searching

Step 6. Sort the search results by Name: Click the View tab > Under the Panes section, select Preview pane > Under the Layout section, select Details > Under the Current view section, click Group by, and then select Name.

To arrange the files in ascending order, click Group by, and then select Ascending.

Step 7. Check for the duplicate files that are saved in different locations and check the Date modified column to know which files you have the latest version.

Check dup files

Step 8. After checking the files, select the file you want to delete, and then press DELETE on your keyboard.

Method 2. Use CMD to remove duplicate files Windows 10

If you are familiar with command lines, you can also find and remove duplicate files in Windows 10 with CMD.

Step 1. Open CMD as an administrator. To do this, click on Start, then type "cmd" into the search bar, and choose “Run as administrator”.

run as administator

Step 2. Type this command into CMD: "dir /s /b *.extension". Replace ".extension" with the type of files you want to find duplicates of. For example, if you're looking for duplicate JPG files, type "dir /s /b *.jpg".

duplicate files extension

Step 3. Press Enter. CMD will begin scanning for duplicate files, and it will display the results with duplicated files in a list.

duplicate files cmd enter result

You can also find duplicate files using the “WMIC FINDSTR” command:
Open CMD and type "FINDSTR /?" to see all options for the "FINDSTR" command.
Type "FINDSTR /I /C:WINDOWS *.jpg" to search for all JPEG images in the WINDOWS folder.
The results will show all the JPEG images in the WINDOWS folder, with duplicates highlighted in red.

▌To remove duplicate files in a specific folder, follow these steps:

Step 1. Open the folder using File Explorer.

Step 2. Right-click on the folder you want and select "Copy as path".

cmd delete duplicates copy as path

Step 3. Open Command Prompt. Type "del /s /f *.duplicate" and hit Enter. This command will remove all duplicate files in the current folder and its subfolders.

For a more advanced file deletion, you can use wildcard characters with this command. Just type "rmdir /s /q DirName", and it will delete all folders in "DirName" and its subfolders.

Method 3. Rely on a powerful duplicate file finder and remover for Windows 10

To free up space, the results of using File Explorer and CMD can be not as effective as expected. When you want to remove a large amount of duplicate files, these two methods can be somewhat limited and potentially risky.

At this time, it is a good idea to use a powerful duplicate file finder and remover to effectively clean up your Windows 10 device. Here we recommend AOMEI Partition Assistant Professional. Its Duplicate Files Finder can effectively scan all drives of your Windows 10 PC and provide customized solutions for duplicate files.

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Step 1. Click the "Free up" on the main tab and select "Duplicate Files Finder".

Click Duplicate Files Finder

Step 2. Here, all the partitions on the computer are displayed. Click on "Scan" to start scanning. Also, if the partition is locked, the program will still scan it and display duplicate files on the partition. However, it cannot delete duplicate files on locked drives.

Start Scan

Step 3. After the process is finished, all duplicate files that meet the conditions you set will be displayed. You can click the "Preview" to see the duplicate files.


Step 4. You can select the duplicate files you want to delete. Or, click "Smart Select" to automatically select duplicate files. Then, click "Move to folder".

Remove to the Recycle Bin


To remove duplicate files on Windows 10, the provided 3 methods will be helpful. If you want to effectively free up space, AOMEI Partition Assistant shares many practical functions as well. You can use it to move installed programs to another drive, allocate free space from sufficient space, or even secure erase SSD. For the Windows Server environment, here is also the Server Edition.

Irene · Staff Editor
Irene is an Editor of AOMEI Technology. She devotes herself in giving insightful thoughts on common computer problems with simple and clear guidance. Irene loves to help people solve problems and explore more solutions on relevant issues. She loves reading, singing and travelling.