Why is Windows folder so big in Windows 8.1? [duplicate]

Windows 8.1 gives allows you to forcibly remove all previous versions of uninstalled components, even ones that haven’t been around for more than 30 days. These commands must be run in an elevated Command Prompt — in other words, start the Command Prompt window as Administrator. For example, the following command will uninstall all previous versions of components without the scheduled task’s 30-day grace period:

DISM.exe /online /Cleanup-Image /StartComponentCleanup

The following command will remove files needed for uninstallation of service packs. You won’t be able to uninstall any currently installed service packs after running this command:

DISM.exe /online /Cleanup-Image /SPSuperseded

The following command will remove all old versions of every component. You won’t be able to uninstall any currently installed service packs or updates after this completes:

DISM.exe /online /Cleanup-Image /StartComponentCleanup /ResetBase

Source: http://www.howtogeek.com/174705/how-to-reduce-the-size-of-your-winsxs-folder-on-windows-7-or-8/

Try opening the search panel --> type in Task Scheduler --> on the left go into Microsoft folder --> then Windows folder and search for --> Servicing folder , click on it --> now in the mid of the page a "start new component cleanup" will show up. Right click it and select Run, then let the magic work.

It worked for me, 6-7 GB.