Definition

Cookie window (attribution window)

The cookie window is how long after a click a purchase still credits the referring affiliate — commonly 30 days, but set per program from 24 hours to 90+ days. A purchase inside the window pays; one outside it doesn't.

Windows are program policy, not link mechanics — no link check can verify them. What link health determines is whether the window ever starts: a broken link means the click never registers, so there is no window at all.