Screen Saver Stops

Go to Settings/Personalization/Lock Screen/Screen Saver Settings/Settings. Also check your Power Settings for sleep and wake.

Perhaps you have set your display to turn off after a while?
That setting is in Power options.
- In Control panel
- Also in

Settings,
System,
Power & sleep,
Screen.

Denis

I have the wait time for the screen saver set at 720 minutes

?? That would mean the Screen Saver won't start for 12 Hours?! Is that what you want?
Screen Savers usually quit when you move the mouse or type on the keyboard. Are you doing this when you come back? If it has a Settings button you may be able to change that.

"I activate my screen saver, but when I come back later it's no longer on. It stops after about an hour..."
Same with my Windows 7 screen saver. However, I found out that from time to time, a background or a foreground program / utility / whatever "stirs the computer" and poof the screen saver is no more. Most of the time, screen saver timer kicks it back on, however, on occasion, the screen saver stays off.