how to save windows lock screen image local machine

Step: 1

      Open Win+R

Step: 2
                       %LocalAppData%\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets

      Paste above line ...

Step: 3

      Go to those Path

Step: 4

      Ren *.* *.jpg Paste this line

Step: 5

     You can also change extenstion .png .jpeg