How do I disable the Secure Logon background image in Windows 10?

At day 1 of the windows 10 release my Secure Logon background was a specified picture, the same picture as my desktop background. Since Windows automatically updated it has been changed to a picture.
How do I get the picture back?
To be clear, I want this specifically for the Secure logon screen (where it shows "Press Ctrl-Alt-Delete" to unlock), not the standard logon screen.

Brink said:

Hello Swinzon, :)

Are you able to change your lock screen picture to use the same one as your desktop?

https://www.tenforums.com/tutorials/5...dows-10-a.html

Yes, I am able to change it but not with the secure logon turned on.
This is on my file server and I don`t want that ugly beach rock picture

Brink said:

The secure lock screen should use the same picture you set for your lock screen in the tutorial I posted.

As a test, press the Win+L keys to lock your computer after setting the image you want to see if it shows on the secure lock screen.

I did not understand anything in that tutorial