No option

[Guest]

I do not have any option for setting an image as wallpaper when I right-click
on it, not when I right-click on the desktop. What am I missing?

 

[Ayush]

[Janice from MD]s message :

I do not have any option for setting an image as wallpaper when I right-click
on it, not when I right-click on the desktop. What am I missing?

Try the following from start-run:
regsvr32 /i shimgvw.dll

Good Luck, Ayush.