Sets SubscribedContent-338387Enabled = 0 under the per-user ContentDeliveryManager key. Turns off the 'Get fun facts, tips, and more from Windows Spotlight on your lock screen' content — the channel that overlays trivia, app promos, and Bing-image captions on the lock screen and fetches them in the background. Your wallpaper/Spotlight image stays; the tip/ad overlays stop. Reversible.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/windows/configuration/windows-spotlight/