How do I fix the Activate Windows message in the bottom right corner? I use Windows 10. +1 (877) -5.14-13.96 An activation window is the specific period of time—or set of conditions—during which a system, feature, product, or process can be activated or is active and effective. Outside this window, activation may be unavailable, invalid, or less effective. If you want it tuned to a specific field, here are a few common flavors: Software / licensing: The time period during which a license or feature must be activated before it expires or locks. Pharmaceuticals / biology: The timeframe in which a drug, receptor, or biological process becomes active and produces its intended effect. Marketing / operations: The planned period when a campaign, promotion, or rollout goes live and is intended to drive results. Engineering / electronics: The interval in which a signal, sensor, or mechanism is enabled and responsive. +1 (877) -5.14-13.96 windows activation support windows activation support phone number windows activation support number windows activation support chat windows activation support phone windows activation support email microsoft windows activation support microsoft windows activation support phone number contact windows activation support windows 11 activation support activate windows support activate windows appeared a windows activation code activate windows suddenly appeared activate windows suddenly activate windows by telephone activate windows by phone activate windows vista by phone microsoft activation support changes microsoft activation support chat windows activation customer support windows activation contact support microsoft activation customer support microsoft office activation support chat windows 10 activation customer support microsoft windows activation chat support contact microsoft support windows activation change windows activation code windows 10 activation support