Windows 10: My desktop wallpaper changed itself with unknown pictures

I had a very strange experience a few minutes ago. I played my favorite song which is from One Direction but suddenly when I minimize all the windows, my desktop wallpaper changed with One Direction picture. All members of One Direction were there which made me having a moment like what if they were not disbanded. And then I was back into myself that my desktop wallpaper changed with a picture I didn't even download or save on my laptop. Please help me with this because it happened to me already like 5 times with different unknown pictures.

:)

 

My desktop wallpaper changes itself with unknown pictures.

Thank you for the answer.

-The laptop has 2 users, but in these two months I'm the only person that used it.

-Yes, a Windows update. But the fact I told, occurred long time later.

-My concern was due to the fact that the pictures that replaced my desktop were not saved in the computer. I use only window's neutral colors for wallpaper. I set the background from : Right-click on the desktop >
Personalize > Background

 

Desktop wallpaper slideshow does not randomly select pictures, and cannot change the folder.

I'm using Windows 10, 64-bit.

Over the last few days, I noticed that the desktop wallpaper images do not change to random pictures, but goes in sequence. Also I cannot change the selected pictures folder I want to use for my desktop wallpaper slideshow.

Any suggestions?

 

change the desktop wallpaper

I want to change my desktop wallpaper but when I right click on a picture "set as desktop wallpaper" is missing