Sets Start_IrisRecommendations = 0 under Explorer\Advanced. Turns off the Windows 11 Start-menu 'Recommended' section's promoted/suggested content (app ads, 'tips', website recommendations) that Microsoft injects alongside your actual recent items. Your own recent files/apps still show; the injected recommendations stop. Takes effect on the next Explorer refresh. 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/start/