The WinSxS folder is the Component Store located in your C:\Windows directory where core Windows files reside including the bits needed to turn on and off any Windows features you enable from the Control Panel. Not only are these files critical to the operation of Windows 10 but when updates to Windows are installed, these files get updated. Every time you receive updates for the OS, the WinSxS folder dramatically grows in size. A commonly asked question by many people is "Why is the WinSxS folder so big?" Here is how you can clean up the WinSxS folder and reduce its size in Windows 10.
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