Takeown /f C:\ProgramData\Microsoft\Windows\SystemData /R /D Y Takeown /f C:\Windows\Web takeown /f C:\Windows\Web*.* /R This was for a medical practice set img100.jpg and img101.png as your desired image:
Image must be the same resolution as your monitor settings if you use this. Here is a script for the Lockscreen workaround in 1709.
