The most direct solution is to purchase a license key or enter your existing one. You can find your activation status by right-clicking the Start button, selecting , and navigating to the About tab. 2. Uninstall and Reinstall
It is important not to confuse the StartIsBack app icon with the , which also features a large sad face :( . startisback sad face
A previous activation has been invalidated, often due to a major Windows update or hardware change. The most direct solution is to purchase a