Save the downloaded file to a stable location on your computer (e.g., your Documents or Program Files/FORScan folder). In FORScan, return to the section and click "Load license key"
This is the most popular option for home mechanics. It is —it is an officially supported, time-limited trial license. forscan license key
The Ultimate Guide to FORScan License Keys: Features, Selection, and Installation Save the downloaded file to a stable location