Don’t remove these files, applications, and folders from your Windows C Drive, it will damage your OS or crash your entire system. Here’s a list of them.


Our computer contains innumerable default files, folders, and applications to operate, initialize, and process the entire operating system. Some of them are quite essential, some of them are not dominant for the system and some of them are so sensitive you should never delete them to avoid damaging your system.

There are bunches of files or folders but here I picked only 9 default or sensitive C drive files or folders you should never remove from your system.

1.  WinSxS
4.  SysWOW64

1. WinSxS

The WinSxS is a Windows system folder that stands for “Windows Side by Side”. This folder stores thousands of the obligatory system components and files.

However, Windows saves some important OS details or files in WinSxS which is useful for Windows installation and updates. The purpose of this folder is to clarify the system compatibility issue with old OS versions, and fix the term ‘DLL Hell’.

Located At: C:\Windows\WinSxS                                                         

Effects of Deleting WinSxS Folder from C Drive

  • It makes your system inoperable.
  • It’s a sensitive folder, so deleting it may damage your entire operating system.

2. Program Files or (x86 Files)

In the C drive, there are two types of folders ‘Program Files’ and ‘Program Files (x86)’. The Program Files folder is available on a 32-bit edition of Windows which contains only 32-bit install programs.

However, if your system is a 64-bit edition of Windows then there is an additional folder called Program Files (x86). This edition contains all 32-bit as well as 64-bit install programs simultaneously. This additional folder (x86) may avoid software conflict issues.

Located At: C:\Program Files and C:\Program Files (x86)

Effects of Deleting These Folders from C Drive

  • The entire Operating System will be corrupt.
  • If you’re using the 64-bit edition and you’ll delete one of the above folders then your system may cause software conflicts. 

3. Ntoskrnl.exe File


The ntoskrnl.exe file is located in the System32 folder which is the most sensitive folder on the C drive. The ntoskrnl.exe is a central kernel of the Windows OS which provides the Kernel and executive layers of the Microsoft Windows NT kernel space.

It contains a dispatcher, cache manager, text, security monitor, kernel, and a few coding to stop the blue error screen.

Located At: C:\Windows\System32

Effects of Deleting this File from C Drive

  • It shows the blue error screen.
  • No hardware and software process will initialize. 
  • It stopped the hardware visualization, memory management, and process management.

4. SysWOW64

The SysWOW64 is a folder available in the 64-bit edition of the Microsoft Windows Operating System.

Apart From this, the WOW64 is an x86 emulator that enables Windows to run 32-bit programs/applications on the 64-bit Windows edition. It contains 32-bit DLL files.

Some people have considered it a virus but they are not right. SysWOW64 performs the requisite factor in the Windows operating system. Without this folder, Windows can’t allow the 32-bit programs on the 64-bit Windows version.

Basically, both the 32-bit and 64-bit applications can be run on a 64-bit edition of Windows but 32-bit applications can only be run on a 32-bit system. 

Located At: C:\Windows\SysWOW64\ 

Effects of Deleting this Folder from C Drive 

  • Software programs or applications cannot process properly on your PC.
  • System components can’t work appropriately.
  • You cannot install 32-bit programs on a 64-bit Windows system.

5. System Volume Information

Another sensitive folder that performs a vital role in Windows functions, restoring points and keeping drive partition data.

Actually, this is the protected folder even when you try to access this you will get the ‘Access Denied Error’ from Windows. This folder contains System log files, volume information, and indexing data for search.

Located At: C:\System Volume Information

(You can’t see this folder directly because it’s a protected folder. To see this go to Options > View and then uncheck the Hide Protected Operating System Files.) 

Effects of Deleting this Folder from C Drive

  • It is the root of every drive in Windows, so after deleting your system will totally crash. (Note: You won’t delete it.)
  • Windows failed to start the machine.

6. RUXIM Folder


The RUXIM is a delicate folder located at ‘Program Files’ which stands for “Reusable UX Integration Manager. It contains several DLL libraries and some executables inside the directory.

There are two executables “RUXIMICS.exe” and “RUXIMIH.exe” inside the folder. According to Microsoft, it collects the data to keep Windows up to date.

Located At: C:\Program Files\RUXIM

Effects of Deleting this Folder from C Drive

  • Windows won’t be able to run smoothly and can’t get the system updates.
  • You will encounter some hiccups while updating Windows.
  • The system can’t acquire the diagnostic and field page information. 

7. Winload.exe File

It is an executable file on your device's C drive which is also known as Windows Boot Loader. It contains binary data and loads the requisite kernel files, and core device drivers.

The winload.exe file is loaded before the kernel is loaded into the main memory (RAM). Some people consider it as a virus for their computer but no this file is not a virus. It is a system process required for your machine to work properly.

Located At: C:\Windows\System32\File

Effects of Deleting this File from C Drive

  • Windows failed to process the system which creates consequences while booting.
  • Without this, CPU intensive can manipulate system resources causing speed loss.

8. Swap File

The Swap File is a default hidden system file that is quite similar to the Page File in the C drive. It contains temporary storage of information.

The job of Swap File is to swap a section of RAM storage from an integrated program and free up more space for other essential programs.

Basically, a computer utilizes short-term memory or RAM to reserve the information of current live operations, but this file provides the auxiliary memory to grasp extra data.

Located At: C:\pagefile.sys

Effects of Deleting this File from C Drive

  • Programs might start crashing instead of swapping into that extra memory.
  • Some advanced Windows applications won’t process or run on the system.
  • The system can’t handle the extra load of memory consumption due to unused files.

9. HAL.dll File


Another critical DLL library or (file) stands for “Hardware Abstraction Layer”. This is the most requisite library for the boot process for every Windows operating system.

This is the mediator of the system to connect the kernel to the hardware like the CPU and the chipset. Apart from this, the HAL file buries the hardware intricacy of the Windows applications.

Located At: C:\Windows\System32\Hal

Effects of Deleting this File from C Drive

  • Operating can’t link to the machine chipset.
  • The system cannot perform the hardware abstraction process.
  • Occurring complications during the booting process.

Also Read: 5 Windows Task Manager Processes You Should Never End

Stay away from Above Drive Folders

We know that our computer hard drive contains numerous files, and folders to run the operating system properly. Some of them are hidden files and some of them are visible but protected by the system.      

Actually, when you try to delete such files Windows won’t allow you and recommend you to not remove this file from the drive for a reason. Removing them causes big damage to the entire system.

Hence, Windows keeps such sensitive folders hidden and stays in protected mode. So try to leave these folders alone to avoid massive system damage.

Thank You :)