Sets DisableTailoredExperiencesWithDiagnosticData = 1 under Policies\Microsoft\Windows\CloudContent. This is the machine-wide Group-Policy enforcement of 'don't use my diagnostic data to show me tailored tips, ads, and recommendations' — stronger than the per-user toggle because it can't be silently re-enabled by an app or a feature update. 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/client-management/mdm/policy-csp-experience