This kind of file allows you to uninstall an update later. Here, I list some of them that are removable.ġ. Most of them are critical for the OS to run normally and can’t be deleted but some of them can be deleted to free up storage space. There’re many system-related files in the Windows folder or other folders on the C drive. Thus, over time, the WinSxS folder, as well as the Windows folder, can take large space. The folder will get larger once there’s a new quality update installed. On Windows 10, WinSxS is an essential folder under the Windows folder, which contains most of the components to customize and update the current installation. Then, you dig into it and find the Windows folder has become too large, especially the WinSxS folder under it accounts for most of the storage space it occupies. Over time, the C drive – the system drive– could run low on space and the performance could also be badly worsened. Is there any way to compress this folder?' Why is the Windows folder so large on Windows 10? I find the Windows folder takes up over 20GB of space. So, I plan on freeing up some space for the C drive by deleting some unnecessary files. 'As the C drive is almost full, my PC is gradually becoming slow and sluggish. The Windows folder is too big on my Windows 10 PC

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