For corporate environments or control freaks
Restrict Users from Changing Desktop Background in Windows 10 [Tutorial]
All Windows 7/8/10 users have the ability to change the look and feel of their computing experience. This includes cosmetic changes such as the screensaver and lock screen in Windows 10. However, many administrators deny users access to certain customization features in order to create a uniform environment in a work environment. Learn how to prevent users from changing the screensaver in Windows 7/8/10.
Years ago, when everyone was using large TV-like CRT monitors, screen burn-in was a real problem that cost companies billions in replacement and repair costs. Today's LCD and LED monitors are less prone to screen burn-in. Still, many companies require users of their PCs to maintain a screensaver to save money and avoid replacement costs.
Unfortunately, it is difficult to control all users when it comes to PC settings such as screensavers. Administrators correct this problem by setting screensavers on the many PCs they are responsible for; using a group policy, they prevent users from changing the screensaver.