Reference article: http://blogs.technet.com/b/askpfeplat/archive/2014/05/13/how-to-clean-up-the-winsxs-directory-and-free-up-disk-space-on-windows-server-2008-r2-with-new-update.aspx
The update is available on Windows Update. It can also be manually downloaded from the Microsoft Update Catalog. The KB article listed above will also direct you to a download link in the Microsoft Download Center.
Install windows feature “ Desktop Experience”
Run Disk cleanup.