Why are Duplicate Files in the Winsxs Folder?

Why are Duplicate Files in the Winsxs Folder?

Summary: The WinSxS (Windows Side-by-Side) folder is an important part of Windows and contains copies of numerous versions of some of the essential Windows system files for compatibility and stability purposes by the Windows OS. On the other hand, the folder accumulates numerous duplicate files and starts worrying about their waste of disk space.


These duplicates operate from how Windows handles application dependencies, so now both old and new applications are able to run with no issues.


This tidbit implies that as storage needs increase, knowing the why (and how we can manage duplicate files in winsxs) is vital now and for our future OS upgrades.


Purpose of Their Presence


So, let's explore here what these files and folders are so that we get the concepts cleared. We will also be able to answer why these duplicate files are in the WinSxS folder:


  1. The idea is that WinSxS has multiple versions of files at any one moment, so an app can use the version it requires.
  2. Due to Windows updates, new files are added; however, the existing ones remain so that any errors in updates can be undone.
  3. When Windows holds versions of files needed to run some Applications.
  4. This folder has files for some Windows features that you are not using at the current moment in time, as a backup for later access.
  5. Some of those "duplicates" are shortcuts or links to the same file. As a result, no true data duplication is performed.

Why are Duplicate Files in the Winsxs Folder - Elaborated Explanation


1. Side-by-Side Assemblies


Assemblies are another name for system files, and WinSxS is used to store these files in different versions. This enables applications to maintain their own particular versions of libraries or components, avoiding conflicts with other software. As it might look like there are duplicate files, but the variants are important for a program to run properly.


2. Windows Updates and Patching


The WinSxS folder is a combination of both old and new versions of system files. Whenever we have an update on Windows, it pours newer versions of those files into that folder. As a result, if an update causes issues, you can roll back to previous versions and prevent data loss.


3. Application-Specific Requirements


Windows has several copies of files saved in the WinSxS folder, allowing your software to run without a hitch. These copies are formatted the same, but are mimicking different copies. It can do some work for you in avoiding mistakes and irregularities.


4. Component Store


Windows keeps some important parts of Windows in a secretive little folder called WinSxS. When Windows capabilities are enabled or disabled, they are not removed or saved; however, they exist in the WinSxS directory. To have them readily on hand to reactivate them when the time comes that is needed.


5. Hard Links


Note that some of these "duplicate" files are actually hard links (meaning they are not identical copies of a file, but instead merely pointers to the same physical data on disk). Hard links enable you to have multiple file names referring to the same data on the disk; hence, even though they occupy similar space in the file system, the data itself does not get duplicated.


Is It Safe to Delete Duplicate Files in the WinSxS Folder?


The answer would be No. That's because manually delete duplicate files in the WinSxS folder is not safe and can impact your entire system. And we are going to walk you through why that is.


The folder WinSxS is heavily reliant on for the stability of the Windows operating system. Deleting files from it one by one can lead to software malfunction, crashing your system or you may find your computer unresponsive to mouse and keyboard commands.


In the process of manual deletion of some files, Windows updates or patches may go out of order on occasions to keep its instability or security vulnerabilities every now and then.


Safe Strategies for Managing the WinSxS Folder


And we have told you how duplicate files in the WinSxS folder are advantageous for you. We will now discuss various methods you can use to manage the WinSxS folder.


Disk Cleanup Tool: The Disk Cleanup feature helps you make some space on a Windows computer. To delete your system files, simply search for “Disk Cleanup” in the start menu and click on the option.


Dism Command: Alternatively, you can use DISM (Deployment Imaging Service and Management Tool) to clean up the WinSxS. The command is as follows:


Dism. exe /online /Cleanup-Image /StartComponentCleanup

This command safely removes old versions of components that we do not need.


Storage Sense: Windows 10 and newer have a feature (named Storage Sense) that can automatically remove unnecessary files, including those in the WinSxS folder.


Read: How to Delete Duplicate Contacts in Outlook Address Book?


Chief Tech to Delete Duplicate Files From the WinSxS Folder


SysTools Duplicate File Finder is a sure shot and the most secure way for searching and deleting duplicate files. Utilize its advanced customization fields to select hidden duplicate file types,e.g., hidden duplicate file types stored inside folders.

Coming back to its specifications,


it accepts 70+ file formats- photos, video clips, documents, etc. It provides such specific information as duplicate data size and number of files. Scan only certain folders or their subfolders, too. And provides powerful normal and recursive duplicate scanning options.


Final Note


We also talked about the importance of cleaning duplicate files in the WinSxS folder and how to do it smarter. Although the WinSxS folder may seem like it has duplicates, it's built this way to provide stability between Windows updates.


However, with the right tool and technique, you can correctly manage this folder. Additionally, it will help you unclutter the disk space and run your system fine.